{"id":6157,"date":"2025-05-10T11:12:09","date_gmt":"2025-05-10T11:12:09","guid":{"rendered":"https:\/\/nationalgunowner.org\/index.php\/2025\/05\/10\/holosun-507-comp-a-big-improvement\/"},"modified":"2025-05-10T11:12:10","modified_gmt":"2025-05-10T11:12:10","slug":"holosun-507-comp-a-big-improvement","status":"publish","type":"post","link":"https:\/\/nationalgunowner.org\/index.php\/2025\/05\/10\/holosun-507-comp-a-big-improvement\/","title":{"rendered":"Holosun 507 Comp: A Big Improvement"},"content":{"rendered":"
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<\/svg><\/span>Estimated reading time: <\/span>7<\/span> minutes<\/span><\/p>\n

Holoson is well known for its 507\/407 line like the 507C.\u00a0 I never liked the reticle and the lens was a bit too small to be ideal.\u00a0 The new 507 Comp improves both in a great way.\u00a0 Bigger lens, bigger dots, and eight reticle choices.<\/p>\n

<\/figure>\n

Bigger is Better<\/h2>\n

I like big dots!\u00a0 They are easier to pick up with the eye and easier to see during recoil and transitions.\u00a0 In the standard 507 line from Holosun, I always preferred the discount version, the 407 CO.\u00a0 While it is now discontinued, I thought it was the best reticle of all the reflex-style red dot sights (RDS) that Holosun made.\u00a0 It featured the same housing and lens size as the 407C and 507C, but instead of a single 2 or 3moa dot and 32moa ring (507C only) it came with an 8 MOA donut.\u00a0 Just a simple clean large ring.\u00a0 I would have preferred a large dot, but the ring was the next best choice.<\/p>\n

The other limiting factor of the standard 507\/407 was the lens size.\u00a0 While not tiny it was still pretty small.\u00a0 The smaller a lens is vertically, the easier it is for the dot to move off the lens under recoil.\u00a0 A wider lens makes it easier to see the dot on the lens if your gun is not straight ahead on the draw, a common problem with newer dot shooters.<\/p>\n

\"507
The 507 Comp has a lens about as wide as the Rome 3 XL and as tall as the SRO.<\/figcaption><\/figure>\n

Enter the 507 Comp<\/a>, more reticle options, and a bigger and taller lens.\u00a0 This optic is primarily intended for use on a pistol, specifically a competition pistol.\u00a0 It features an RMR footprint (same as the standard 507) which is the most common footprint for optics on a pistol.<\/p>\n

You Don\u2019t Need A Small Dot For Precision<\/h2>\n

But Muh Precision!\u00a0 A common statement by the small dot nerds.\u00a0 You don\u2019t need a 2moa dot to hit the A zone of a USPSA target at 25, or 50 yards.\u00a0 I shot USPSA for over a decade with a 10 MOA Aimpoint tube.\u00a0 A lot of those matches included 50-yard standards stages.\u00a0 A 10 MOA dot covers 10 inches at 100 yards.\u00a0 It covers 5 inches at 50 Yards.\u00a0 A USPSA A zone is 6 inches wide, so the dot won\u2019t cover the A zone and you can still hit it at 50 yards \u2013 and it is that much faster at closer distances.<\/p>\n

CRS \u2013 Competition Reticle System<\/h2>\n

The 507 Comp has a very large lens, as wide as a Romeo3 XL and about as tall as an SRO.\u00a0 With that large lens, you have many reticle choices. 2 moa dot, 8 moa circle, 20 moa circle, and 32 moa circle.\u00a0 The dot can be used with any size circle or just the circle, giving you 8 different reticle options.\u00a0 To switch the reticle you just hold the minus button for a couple of seconds.\u00a0<\/p>\n

\"Complete
The 507 Comp features the Competition Reticle System (CRS) giving you 8 options.<\/figcaption><\/figure>\n

507 Comp Testing<\/h2>\n

I\u2019ve been testing the 507 Comp in competition on a Glock 45 MOS for over 6 months.\u00a0 The Competition Reticle System is a big advantage in that you can switch reticles between stages.\u00a0 On a stage with a fair amount of 20+\u00a0yard targets, I will use the 8 moa circle and dot.\u00a0 On a stage like Smoke and Hope with 18\u00d732 inch steel rectangles at 7 yards I use the 20 moa circle and dot.\u00a0 I do not use the dot or 32 moa circle alone; for me the dot is too small and the circle too big.\u00a0<\/p>\n

In head-to-head testing, I was generally faster on target, with follow-up shots and in transitions with the 507 Comp vs the 407 CO even when just using the 8 moa circle on the Comp.\u00a0 The larger lens makes a difference under recoil and movement.<\/p>\n

\"507
Shooter\u2019s view of the 507 Comp (left) and 407 CO (right).<\/figcaption><\/figure>\n

After all this testing, I like the 507 Comp and I would not hesitate to use one on a carry gun like a Glock 17 or 19.\u00a0 I have carried my G45 with the 507 Comp as well.\u00a0 While the lens is much larger to the eye, the housing does not feel significantly larger to me when carrying.\u00a0 I would not consider the 507 Comp appropriate for smaller pistols like a G43x or P365.\u00a0 It would be much wider than the slide and the RMSc footprint to RMR adapter plates are a bit clunky.<\/p>\n

The rest of the 507 Comp has all the features you are used to with Holosun.\u00a0 It comes in both red and green, coated glass, 7075 T6 aluminum, IP87 waterproofing, shake awake, up to 50k hours of battery life, and all the other standard stuff.\u00a0<\/p>\n

507 Comp vs 507C Size<\/h2>\n

The main differences in specs are the weight and window size.\u00a0 The Comp weighs 1.7 oz and the 507C 1.5 oz.\u00a0 The Comp window is 1.1 x .87 inches and the 507C is .63 x .91 inches.\u00a0 The area for the Comp is .957 sq inches while the 507C is .5733 sq inches.\u00a0 The 507C housing is 1.78 x 1.15 x 1.15. The 507 Comp has a larger housing at 1.8 x 1.3 x 1.3. The Comp window is just under 70% larger than the 507C.\u00a0 The Comp only has 8 brightness settings (2 NV, 6 DL) vs the 12 settings (2 NV, 12 DL) for the C.<\/p>\n

\"Shooters<\/figure>\n

I like the 507 Comp. It is a contender that can hang with other popular comp optics like the Romeo3 XL, SRO, and STS2.\u00a0 There are two things I did not like.\u00a0 I would prefer if the 8, 20, and 32 moa circles were closed.\u00a0 All three have a small gap at the bottom 6 o\u2019clock position.\u00a0 I would also prefer a larger 4-6 moa dot instead of the 2 moa.\u00a0 Ideally, I would want a 6 moa dot with 12, 18, and 24 moa circles.<\/p>\n

READ MORE: Testing Holosun\u2019s Titanium 3X Magnifier<\/a><\/strong><\/p>\n

All in all, it is a solid choice for competition or carry (on an appropriate-sized pistol).\u00a0 Large lens, 8 reticle choices, good battery life, and reasonably priced at $435 MSRP and a common street price of $369.<\/p>\n

507 Comp Specs:<\/h2>\n
\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
OPTICAL SPECS<\/td>\n<\/tr>\n
Reticle<\/td>\n2 MOA Dot & 8\/20\/32 MOA Circle<\/td>\n<\/tr>\n
Light Wavelength<\/td>\n650nm<\/td>\n<\/tr>\n
Reticle Color<\/td>\nRed<\/td>\n<\/tr>\n
Parallax Free<\/td>\nYes<\/td>\n<\/tr>\n
Unlimited Eye Relief<\/td>\nYes<\/td>\n<\/tr>\n
Magnification<\/td>\n1x<\/td>\n<\/tr>\n
Multi-Coatings<\/td>\nYes<\/td>\n<\/tr>\n
PHYSICAL SPECS<\/td>\n<\/tr>\n
Window Size<\/td>\n1.1\u00d70.87<\/td>\n<\/tr>\n
Dimension (in)<\/td>\n1.8\u00d71.3\u00d71.3<\/td>\n<\/tr>\n
Weight (oz)<\/td>\n1.7<\/td>\n<\/tr>\n
MECHANICAL SPECS<\/td>\n<\/tr>\n
Housing Material<\/td>\n7075 T6 Aluminum<\/td>\n<\/tr>\n
Surface Finish<\/td>\nAnodize<\/td>\n<\/tr>\n
Adjustment per Click<\/td>\n1 MOA<\/td>\n<\/tr>\n
W&E Travel Range<\/td>\n\u00b130 MOA<\/td>\n<\/tr>\n
ENVIRONMENT SPECS<\/td>\n<\/tr>\n
Storage Temperature<\/td>\n-40\u2103~70\u2103<\/td>\n<\/tr>\n
Working Temperature<\/td>\n-30\u2103~60\u2103<\/td>\n<\/tr>\n
Submersion<\/td>\nIP67<\/td>\n<\/tr>\n
Vibration<\/td>\n5000G<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/figure>\n

*** Buy and Sell on GunsAmerica!<\/a> ***<\/em><\/strong><\/p>\n

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Matt likes to shoot and has been in the firearms industry for 30 years.\u00a0 Formerly a professional competition shooter\u00a0 Matt works as a photographer and writer and can often be found on the sidelines of professional sporting events and on racecourses around the world.\u00a0 Matt still competes in Multi-gun, pistol and long range rifle matches.<\/p>\n

Experience:<\/strong><\/p>\n

    \n
  • The only man to earn a Grand Master classification using a Hi-Point.<\/li>\n
  • Steel Challenge Grand Master.<\/li>\n
  • GSSF Gunny Challenge Invitational Winner.<\/li>\n
  • Former Pistolsmith.<\/li>\n
  • Former Professional competition shooter.<\/li>\n
  • Experienced in IDPA, USPSA, PRS, 3-Gun, Steel Challenge, GSSF.<\/li>\n<\/ul><\/div>\n<\/div>\n<\/div>\n<\/div>\n<\/div><\/div>\n","protected":false},"excerpt":{"rendered":"

    Estimated reading time: 7 minutes Holoson is well known for its 507\/407 line like the 507C.\u00a0 I never liked the reticle and the lens was a bit too small to be ideal.\u00a0 The new 507 Comp improves both in a great way.\u00a0 Bigger lens, bigger dots, and eight reticle choices. Bigger is Better I like […]<\/p>\n","protected":false},"author":1,"featured_media":6158,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-6157","post","type-post","status-publish","format-standard","has-post-thumbnail","category-uncategorized"],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/nationalgunowner.org\/index.php\/wp-json\/wp\/v2\/posts\/6157","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/nationalgunowner.org\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/nationalgunowner.org\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/nationalgunowner.org\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/nationalgunowner.org\/index.php\/wp-json\/wp\/v2\/comments?post=6157"}],"version-history":[{"count":1,"href":"https:\/\/nationalgunowner.org\/index.php\/wp-json\/wp\/v2\/posts\/6157\/revisions"}],"predecessor-version":[{"id":6159,"href":"https:\/\/nationalgunowner.org\/index.php\/wp-json\/wp\/v2\/posts\/6157\/revisions\/6159"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/nationalgunowner.org\/index.php\/wp-json\/wp\/v2\/media\/6158"}],"wp:attachment":[{"href":"https:\/\/nationalgunowner.org\/index.php\/wp-json\/wp\/v2\/media?parent=6157"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/nationalgunowner.org\/index.php\/wp-json\/wp\/v2\/categories?post=6157"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/nationalgunowner.org\/index.php\/wp-json\/wp\/v2\/tags?post=6157"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}