Difference between holosun 507c and 507k

Jan 21, 2020 ... Checking out the Holosun 507K 508T and 509T at Shot Show 2020. 507k has a footprint that is a slightly modified rmsc.

Ultimately, it’s your decision to make. My job here was to provide you with the differences between Holosun 507c vs 507k, and I tried my best to provide you with it. That’s all for now. Hope you had fun while reading it and learned something new as well. Will see you on the next one. Take care and have fun till then.Use these five self-talk tips to for a better chance at achieving your goals, gaining confidence, and performing better. Become your own source of calm and encouragement. Right now...The main difference between the Holosun 407c and 507c is the latter’s inclusion of a solar panel as a backup power source, along with a few additional features. 1. Can the 407c and 507c be used on pistols? Yes, both the 407c and 507c are designed to be compatible with pistols. 2.407C & 507C Optic Cover - Precision Fit, High-Quality Soft Rubber Protection - Dust, Scuff & Scratch Resistant ... So a $30 difference between the two different styled optics. ... Holosun 507K Green X2, 32 MOA Ring & 2 MOA Green Dot, Side Battery - HE507K-GR-X2 . L B. Great Optic, Great Price!The major difference between Holosun 407k vs 507k is the reticle’s size. The Holosun 407k provides a 6 MOA dot, which is great for accuracy, quick detection, and range. In contrast, the Holosun 507k offers a multiple reticle system with two different reticle sizes. One is the 2 MOA reticle, which offers accuracy or precision, and the other is ... Purchased Holosun SCS for Glock 20 gen 5 MOS. Holosun mounted by gun store using screws that accompanied the sight. No lock tight was added because blue was already on the screws and a torque tool was used to ensure proper tightening. I watched the installation. Shot at the range firing PMC 10MM, 200 grain FMJ-TC.

What’s the difference between Holosun 507K and 507C? The 507C has a solar panel on top for battery supplementation and as a backup, while the 507K lacks this feature. {Holosun 507c vs 507k} Is Holosun 507C reliable? Yes, the Holosun 507C is reliable, and known for increasing accuracy and providing faster target acquisition.Optics and Performance Comparison 1. Reticle options. Shield RMSc: The Shield RMSc features a simple 4 MOA and 8 MOA red dot reticle, offering fast target acquisition and precise aiming. Holosun 507K: The Holosun 507K offers three reticle options: a 2 MOA red dot, a 32 MOA circle, and a combination of both.This allows users … Holosun 507c: Holosun 507k: Optical Performance: Features a crisp, clear reticle with multiple reticle system options, allowing users to switch between a dot only, ring only, or dot and ring reticle combination. Offers similar optical clarity with a multi-reticle system, providing versatility for different shooting preferences. Durability The major difference between Holosun 407k vs 507k is the reticle’s size. The Holosun 407k provides a 6 MOA dot, which is great for accuracy, quick detection, and range. In contrast, the Holosun 507k offers a multiple reticle system with two different reticle sizes. One is the 2 MOA reticle, which offers accuracy or precision, and the other …Holosun 507c: Holosun 507k: Optical Performance: Features a crisp, clear reticle with multiple reticle system options, allowing users to switch between a dot only, ring only, or dot and ring reticle combination. Offers similar optical clarity with a multi-reticle system, providing versatility for different shooting preferences. DurabilityThe main differences between the Holosun 507k and Trijicon RMRcc include: Reticle options: The Holosun 507k offers a choice of a dot or circle-dot reticle, whereas the RMRcc only has a single dot reticle option. Window size: The 507k has a slightly larger window compared to the RMRcc, providing a broader field of view.Nov 27, 2023 · Read dozens of our recent 5 star reviews here. Hey Freedom Gorillas today we are going to explain the similarities and differences between the Holosun 507K X2 ACSS Vulcan and the 507K X2. We understand that it can be difficult to understand the differences when you don’t have them both in your hands. If you aren’t familiar with the ACSS ...

Both the Holosun 407c and 507c utilize a CR2032 battery with a lifespan between 50,000 and 100,000 hours. You can certainly allow the battery to sit in your optic and get as much mileage out of it as possible, but all batteries become faulty with age, regardless of their remaining lifespan. To keep your optic in prime condition, consider ...Both models have the same IP67 submersion rating, but the 509T is slightly heavier at 1.72 oz compared to the 507C at 1.5 oz. Both optics have a battery life of 50,000 hours with solar backup. Check out these two badass red dot optics. Holosun 507C and 509T. Open emitter vs closed emitter designs.The main difference between the Sig Sauer Romeo Zero and the Holosun 507k x2 relates to size, weight, and reticle. Romeo Zero is lighter and more compact, but Holosun 507K X2 has more reticle options and longer battery life. The Romeo Zero is a good option for those who prioritize a small and lightweight sight, whereas the Holosun 507K X2 is a ...Apr 1, 2024 · What’s the difference between Holosun 507K and 507C? The 507C has a solar panel on top for battery supplementation and as a backup, while the 507K lacks this feature. {Holosun 507c vs 507k} Is Holosun 507C reliable? Yes, the Holosun 507C is reliable, and known for increasing accuracy and providing faster target acquisition. The short answer is no, the Holosun 50&k has a different footprint than the 407k. The 507k uses the same mounting plate as the HS507C, so it will fit in any optic that accepts an RMR/SRO. The 407K will not fit in those optics. The reason for this is that the 50&k has a shorter housing and a slightly different shape than the 407k.Holosun continues with desirable features, such as Shake Awake, Multiple Reticle System, Super LED and more are standard here. Measuring just 1.6"x0.98"x0.95" and weighing only 1 oz., optimized ...

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Holosun 507k vs 507c size. ... I don’t necessarily want to put a micro optic on my full size but if it’s not that much of a difference in size between the 2 i’d Rather have the square frame and window. ... There is quite a difference in the window size of the 507k and 507c. I still like the 507c on a full size slide. Reactions: Catalina ...The major difference between Holosun 407k vs 507k is the reticle’s size. The Holosun 407k provides a 6 MOA dot, which is great for accuracy, quick detection, and range. In contrast, the Holosun 507k offers a multiple reticle system with two different reticle sizes. One is the 2 MOA reticle, which offers accuracy or precision, and the other …Aug 18, 2022 · The short answer is no, the Holosun 50&k has a different footprint than the 407k. The 507k uses the same mounting plate as the HS507C, so it will fit in any optic that accepts an RMR/SRO. The 407K will not fit in those optics. The reason for this is that the 50&k has a shorter housing and a slightly different shape than the 407k. Feb 21, 2024 · The main difference between the Holosun 407c and 507c is the latter’s inclusion of a solar panel as a backup power source, along with a few additional features. 1. Can the 407c and 507c be used on pistols? Yes, both the 407c and 507c are designed to be compatible with pistols. 2.

The HS507C X2 is an open reflex optical sight designed for full-sized pistol applications. The HS507C X2 improves on previous versions by adding Lock Mode which was first introduced in our 2018 LEM pistol optic models. Lock Mode, when activated, locks the buttons preventing inadvertent setting changes. Additional features include Holosun’s ...Holosun continues with desirable features, such as Shake Awake, Multiple Reticle System, Super LED and more are standard here. Measuring just 1.6"x0.98"x0.95" and weighing only 1 oz., optimized ...Feb 9, 2021 · The Holosun 508t is a similar size to the 507c, but there are a few differences in its measurements…. It has a height that measures in at 1.08 inches. In addition to that, it has a width that measures in at 1.21 inches, and its length comes in at 1.77 inches…. On top of that, the 508t’s weight comes in at 2.0 ounces…. Size Comparison Conclusions…. Both of these sights are extremely compact, and their dimensions are very similar…. That being said, the biggest difference in this section is in terms of their respective weight…. The Holosun 507K weighs in at 1 ounce, whereas the Romeo zero is only 0.4 ounces….The HE507K-GR X2 improves on previous the version by adding Lock Mode which was first introduced in our 2018 LEM pistol optic models. Lock Mode, when activated, locks the buttons preventing inadvertent setting changes. Additional features include Holosun’s Green Super LED with up to 50k hour battery life, Multi-Reticle System, and Shake Awake.The 507k, while focused on compact size and efficiency, provides a similar versatility with reticle options that cater to close-quarters engagements and precision shooting alike. Evaluation: The versatility in reticle options for both the 507c and 507k ensures that they can cater to a wide range of shooting disciplines.Good morning, Quartz readers! Good morning, Quartz readers! What to watch for Monday US banks pay up for turfing people out of their homes. Federal regulators are expected to annou...Hey Freedom Gorillas today we are going to explain the similarities and differences between the Holosun 507C X2 ACSS Vulcan and the 507C X2. We know it can be difficult to understand the differences when you don’t have them both in your hands. If you aren’t familiar with the ACSS Vulcan system, it’s essentially an aim.The HE507C-GR X2 is an open reflex optical sight designed full-sized for pistol applications. The HE507C-GR X2 improves on previous versions by adding Lock Mode which was first introduced in our 2018 LEM pistol optic models. ... Holosun Grade 5 Titanium has more than double the tensile strength and has five-times the fatigue strength of 7075 ...HOLOSUN GREEN DOT SIGHT - The HE507K-GR X2 is an open reflex optical sight designed for subcompact pistol applications; It features Lock Mode that locks the buttons preventing inadvertent setting changes; This handgun sight is a direct for P365X/XL, and requires an adapter plate for slides with a four-boss interface; Multi Tool, Lens Cloth, and ...

The HE507K-GR X2 improves on previous the version by adding Lock Mode which was first introduced in our 2018 LEM pistol optic models. Lock Mode, when activated, locks the buttons preventing inadvertent setting changes. Additional features include Holosun’s Green Super LED with up to 50k hour battery life, Multi-Reticle System, and Shake Awake.

3. Is the battery life the same for the Holosun 407k and 507k? Both the 407k and 507k offer a long battery life of up to 50,000 hours. 4. Does the Holosun 407k have a solar fail-safe? No, the Holosun 407k does not have a solar fail-safe feature. 5. What is the housing material of the Holosun 507k? The Holosun 507k features a rugged forged …Holosun 407c. An extended battery life of 50,000 hours is a huge advantage over any red dot. The 407c has a 12 brightness setting feature, 10 brightness options for daytime, and 2 brightness settings for night vision. This enables the shooter to use a sharper and crispier red dot in different lighting conditions.What’s the difference between Holosun 507k and 507c? The 507c offers both red and green reticles, while the 507k only has a red one. Also, the 507k is more compact and lightweight, making it a better fit for smaller firearms. What is the difference between Holosun 507k and 407k? The main difference between Holosun 407k and 507k is the reticle ...Holosun is a major name in pistol optics. They offer a range of sights for your pistol, and two of the most common are the Holosun 507k and the 507c. Let's t...Weatherproof Performance. The most significant difference is that the EPS Carry has an enclosed emitter, while the 507K has an exposed emitter. Long story short, the EPS Carry blows the Holosun 507K out of the water when it comes to mud and water protection. If it gets dirty, It's very easy to clean the front and rear lenses.The major difference between Holosun 507c and 507k is that holosun 507c has a red/ green reticle, whereas the 507k has just only red reticle. Moreover Holosun 507k is compact and lightweight, specially made to fit on small and compact pistol.Holosun 507C Vs 507K - When it comes to red dot sights, the Holosun 507K and Holosun 507C are two popular choices among shooting. ... The most noticeable difference between the two sights lies in their size and weight. The Holosun 507C is larger and heavier, which may be a consideration for some users who prioritize a lightweight …The main difference between the Holosun 507c and the 508t is that the 508t has a Titanium housing while the 507c has an Aluminum one. This housing makes the 508t more durable than the 507c. Also, 508t is slightly more compact but heavier than the 507c. Lastly, the 507c is 55-60 dollars less expensive than the 508t.There are various aspects that distinguish HOLOSUN® from other providers and other technologies. Quite simply: the technology and the price. With the reflex sight technology, the sight does not emit an active light beam, which is why the reticle cannot be perceived by the target. There is no enlargement, but there is parallax freedom.

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Holosun has been a formidable competitor in the world of firearm optics. Among some of its most successful and cherished products was the 507C V2, which came out in early 2020. However, fate had different plans for it. Shortly after, Trijicon sued Holosun for infringement. Sometime later, the two competitors announced a settlement, but theHey Freedom Gorillas today we are going to explain the similarities and differences between the Holosun 507 Comp and the 507C X2. We understand that it can be difficult to understand the differences when you don’t have them both in your hands. TLDR: The Holosun 507Comp and the 507C X2 have the same RMR footprint, but t.The main difference between the Holosun HS507C and HS507K lies in their size and application. The HS507C is a larger sight primarily designed for use on rifles and larger handguns, while the HS507K is more compact and optimized for small-to-midsize handguns. Additionally, the HS507K has a different battery tray design and may feature …The major difference between Holosun 507c and 507k is that holosun 507c has a red/ green reticle, whereas the 507k has just only red reticle. Moreover Holosun 507k is compact and lightweight, specially made to fit on small and compact pistol. 2. Trijicon SRO Sight Adjustable – Best Field of View.TLDR: The main differences between the 507K X2 ACSS Vulcan and 507C X2 ACSS Vulcan are that the 507K X2 ACSS Vulcan is a K Series Footprint and the 507C X2 ACSS Vulcan is an RMR footprint. The other major difference is the 507K X2 ACSS Vulcan has a 3 MOA Center dot and a 230 MOA dotted outer ring, while the 507C X2 ACSS Vulcan has a 10 MOA ...The main difference between the Holosun 507c and 507k is that the 507c is for full-sized handguns, whereas the 507k is for subcompact guns. So, the 507k is small in size and weight. All other differences also stem from this basic difference between the two optics. 507c vs. 507k: Specifications. Holosun 507k vs. 507c: Features.Jul 10, 2020 ... EDC | Holosun 507C X2 Review | Navy SEAL | Jason Pike | 2022. FrogMan ... Holosun 507K & 507C Comparison [Plus Green Dot]. Freedom Gorilla•235K ...The main differences between the Holosun 507c and 508t are the reticle options and the housing design. The Holosun 507c offers a 2 MOA dot or a 32 MOA circle dot reticle, while the Holosun 508t offers a 2 MOA dot or a 32 MOA ring reticle. Additionally, the 508t features a titanium housing, making it more durable and lightweight compared to the ...The ranks of” influencers” are growing as the number of social media followers required to pique brands’ interest shrinks. A new era of marketing is upon us, and it has upended ide... ….

Today at the Freedom Gorilla school of knowledge we are going to show you the size differences between the 507 Comp and a lot of other "comparable" optics out there. ... Holosun 507 Comp vs the World - Trijicon SRO, Viridian RFX 35, 508T, EPS, 507C and more - Photo & Video Comparison. calendar_today ... Canik TP9 Elite SC …Holosun 508T X2 vs 507C X2 Differences. The 508T X2 is made out of Grade 5 Titanium and the 507C X2 is made out of 7075 T6 Aluminum; ... Holosun 507K Green X2, 32 MOA Ring & 2 MOA Green Dot, Side Battery - HE507K-GR-X2 . L B. Great Optic, Great Price! I love these Holosun optics. I have a red dot also which I've used a …I found a great deal on the 507k-x2 green ($265 shipped from Holosun Technologies 507K-GR X2 (Green) - Ibex Armament, OOS as of this post) and decided to compare. In the following 5 pictures, the 507k-RD (red dot) is on the LEFT, and the 507k-x2-GR (green dot) is on the RIGHT: Dirty lens from being carried, should have used canned …Holosun's sights have made a reputation for being durable, having good battery life, and if you're not ready to spent RMR or Delta Point money on a sight, the Holosun is probably the best option on the market. Holosun also has multiple reticle options - the standard 507C can rotate between 3 different reticles - circle-dot like an …Mounting Options. The 507c mounting procedure is similar to the 507k with the use of a removable 1913 Picatinny rail mount, compatible with a variety of firearms. Holosun 507k …The Holosun 507c is an excellent red dot sight, and it offers great value for those who want a reliable and durable optic without spending too much. FAQs. What is the difference between the Holosun 507c and the Trijicon RMR? The major differences between the Holosun 507c and Trijicon RMR are size, weight, brightness settings, battery life, and ...Google to launch AI-centric coding tools, including competitor to GitHub's Copilot, a chat tool for asking questions about coding and more. At its annual I/O developer conference, ...Differences between Holosun 507C & Holosun 508T. 507C is made of 7075 T6 Aluminum, while 508T is made of titanium. 507C tends to be more budget-friendly. 508T offers a somewhat sharper reticle. 508T feels heavier, giving a sense of rugged durability. 508T has an added layer of robustness in Lock Mode.Nov 2, 2023 · The main differences between the Holosun 507k and Trijicon RMRcc include: Reticle options: The Holosun 507k offers a choice of a dot or circle-dot reticle, whereas the RMRcc only has a single dot reticle option. Window size: The 507k has a slightly larger window compared to the RMRcc, providing a broader field of view. Doman Building Materials Group will be reporting earnings from the most recent quarter on November 4.Analysts expect Doman Building Materials Grou... On November 4, Doman Building ... Difference between holosun 507c and 507k, Nov 27, 2023 · Read dozens of our recent 5 star reviews here. Hey Freedom Gorillas today we are going to explain the similarities and differences between the Holosun 507K X2 ACSS Vulcan and the 507K X2. We understand that it can be difficult to understand the differences when you don’t have them both in your hands. If you aren’t familiar with the ACSS ... , TLDR: The main differences between the 507K X2 ACSS Vulcan and 507C X2 ACSS Vulcan are that the 507K X2 ACSS Vulcan is a K Series Footprint and the 507C X2 ACSS Vulcan is an RMR footprint. The other major difference is the 507K X2 ACSS Vulcan has a 3 MOA Center dot and a 230 MOA dotted outer ring, while the 507C X2 …, The Holosun 507K costs $320, while the EPS Carry costs $400. If you want a lower-priced EPS, nix the Carry for the EPS at $330. When considering money, the Holosun 507K is the more economical option. It costs $80 less than the competing EPS Carry. We’ve gone over the details of the Holosun 507K and the EPS Carry., Check Latest Price. The Holosun 507c is larger and a bit heavier than the 507k. It measures 1.54” long x 1.24” wide x 1.78” tall and weighs 1.5 ounces. While still compact for a pistol optic, the 507c is noticeably larger than micro sights like the 507k., The Holosun 507C and 508T are red dot sights with distinct features and durability levels. The 507C offers a versatile design, while the 508T is crafted for rugged reliability. Delving into the world of optics, enthusiasts often encounter the Holosun 507C and 508T. These sights epitomize cutting-edge technology and cater to a variety of ..., Read dozens of our recent 5 star reviews here. Hey Freedom Gorillas today we are going to explain the similarities and differences between the Holosun 507K X2 ACSS Vulcan and the 507K X2. We understand that it can be difficult to understand the differences when you don’t have them both in your hands. If you aren’t familiar with the ACSS ..., The Holosun 507K is a compact red dot sight designed for concealed carry pistols, while the 507C is larger and more suited for duty or competition firearms. Both …, The main distinction in battery power between the two sights is that the 507C has a small solar panel on the top of the optic, while the 507K does not. The solar panel …, Winner: Holosun 507c. The Vortex Venom has 2 dot sizes. But, you don’t get the two options in one model. There are 2 different models for that. While in the 507c, you can switch from a dot to a ring or both on the same optic. The 507c has 3 dot sizes in one optic, and the Venom has just 1., Apr 1, 2024 · The major difference between Holosun 407k vs 507k is the reticle’s size. The Holosun 407k provides a 6 MOA dot, which is great for accuracy, quick detection, and range. In contrast, the Holosun 507k offers a multiple reticle system with two different reticle sizes. One is the 2 MOA reticle, which offers accuracy or precision, and the other is ... , Holosun 507C: While they sound like hollow suns, their sights aren’t hollow by any means. 507C features the same glass-etched reticle and bright display. It also …, Their red dots are very affordable and reliable. The Holosun 507K X2 is a smaller version of the Holosun 507C. Here is my Holosun 507C Review if you want to check out that optic. Pistol red dots are now popular with concealed carry. A small mounting platform that works well with multiple sub-compact pistols is excellent for the Holosun 507K X2., Are you looking for home warranty protection for your home? Our AFC Home Club review will help you learn about the provider’s coverage, costs, and limitations. Expert Advice On Imp..., Initial impressions are: Tint is much less annoying on the 507K. For a given (perceived) brightness match, the RMR cc dot is a little sharper to my eyes (and I have slight astigmatism in my dominant eye) (2MOA for Holosun vs 3.5MOA on RMR cc). The edges on the RMR body are softer (good for smashing into my belly), Thanks!! This might help a little CZ's with Holosun optics My 75 compact (PCR) with a 507k (same size slide as a P01), 507c on an SP01 and a 507k on the 97bd. I first had the 507c put on the SP01, then the 507k came out and seemed a perfect fit for the Compact model, with almost no side overhang whereas the 507c does overhang the side of the ..., 407C & 507C Optic Cover - Precision Fit, High-Quality Soft Rubber Protection - Dust, Scuff & Scratch Resistant ... So a $30 difference between the two different styled optics. ... Holosun 507K Green X2, 32 MOA Ring & 2 MOA Green Dot, Side Battery - HE507K-GR-X2 . L B. Great Optic, Great Price!, The 507C X2 and the 507K X2 are the upgraded versions of the C and K., The Holosun 407K and 507K both offer a 2 MOA dot size, which is ideal for precision shooting at various distances. This small dot size enables shooters to engage targets accurately, even at extended ranges. Brightness Settings. The Holosun 407K and 507K are equipped with multiple brightness settings to accommodate different lighting …, Both the Holosun 507k and the Sig Romeo Zero offer unique advantages as compact optics for single-stack concealed carry pistols. The Holosun 507k outshines the Romeo Zero in durability, lens clarity, reticle options, battery life, and included accessories. However, the Sig Romeo Zero emerges as the winner in terms of size and price., It's been a while guys and a long time coming but here is my video on the Holosun 508T X2 vs 507C X2 ACSS Vulcan Green Dot Reticle / Red Dot.Originally the ..., The main difference between the Holosun 407c and 507c is the latter’s inclusion of a solar panel as a backup power source, along with a few additional features. 1. Can the 407c and 507c be used on pistols? Yes, both the 407c and 507c are designed to be compatible with pistols. 2., Figuring out the value of inherited stock is necessary for tax purposes. The value is called your cost basis. Normally cost basis is the amount of money you invest, which is the a..., Holosun 507C Green & Red Dot - Best All Around Option. Buy the 507C At The Best Price. ... The EPS Carry is very similar to the 407K and 507K except it has one major difference, it is an enclosed emitter optic. This means the laser emitter is protected by a hood. So dirt, mud, or debris will never get in the way of the emitter to distort the ..., Holosun 507C Green & Red Dot - Best All Around Option. Buy the 507C At The Best Price. ... The EPS Carry is very similar to the 407K and 507K except it has one major difference, it is an enclosed emitter optic. This means the laser emitter is protected by a hood. So dirt, mud, or debris will never get in the way of the emitter to distort the ..., Both the Holosun 507K and 507C offer multiple reticle options. Users can switch between a 2 MOA dot, a 32 MOA circle, or a circle-dot reticle, providing flexibility for different shooting scenarios and preferences. Conclusion. Deciding between the Holosun 507K and 507C hinges on personal preference and specific needs., Yes, due to their identical footprint, the same mounting plate can be used for both models. See 3,000+ New Gun Deals HERE. 3. Are the optics and features different between the 407k and 507k? Yes, the 507k has additional features such as the multi-reticle system, while the 407k has a single reticle. 4., Sep 17, 2023 · Detailed Comparison. When comparing the Holosun 507K with the Trijicon RMR, the differences are worth noting. The distinctive features of the Holosun 507K—the Shake Awake technology and the MRS—sets it apart. Yet, the Trijicon RMR’s durability, reticle clarity, and reputability make it a compelling choice. On a personal note, the Holsun ... , What guns will holosun 507k fit? The Holosun 507k is known for its compatibility with a wide range of handguns, particularly subcompact models. It is designed to fit handguns like the Sig P365, Glock models (including the 17, 19, 26, 27, 43x MOS), and the Springfield Armory Hellcat. What’s the difference between Holosun 507k and 507c?, The main difference between these two popular red dot sights is the 507C features a 2 MOA dot and a 32 MOA circle reticle, while the 407C has only a 2 MOA dot. Additionally, the 507C includes a solar failsafe and Shake Awake technology, where the 407C does not. 1. Are the Holosun 507C and 407C the same size?, Holosun 507C Review – Best Micro Red Dot. Holosun makes very affordable and reliable optics. Their red dots are a great option and usually cost half the price of other top brands. The Holosun 507C is the larger version of the Holosun 507K X2 and the 507C has the solar panel on top of the housing that charges the battery., The biggest difference is the fact the EPS is an enclosed emitter pistol red dot sight, and the 507K is an exposed emitter optic. Enclosed emitter optics are a contained system with two lenses. Nothing can get between the emitter and the lens. The 507K has an open emitter, which means the space between the emitter and lens is open., The most noticeable difference between the Holosun 507c and 507k lies in their design and size. The 507c is part of Holosun's Classic series, featuring a larger window that …, Good morning, Quartz readers! Good morning, Quartz readers! What to watch for Monday US banks pay up for turfing people out of their homes. Federal regulators are expected to annou...