V4 DEFENDER MIL/LEO Adapter Holosun 407C / 507C (Round Face) Fits GLOCK MOS

$87.95

THE MOST MODULAR, RUGGED, DURABLE, RELIABLE AND MOST WIDELY USED AFTERMARKET OPTICS ADAPTER PLATE. 

* THIS PLATE IS MADE FROM POLYMER, NOT METAL. THE V4 DEFENDER IS NOT INDESTRUCTIBLE, HOWEVER, WE DO OFFER A REPLACEMENT GUARANTEE IF YOU DO DAMAGE OR BREAK IT. 

**TO ENSURE THE LONGEVITY OF THIS PRODUCT, IT’S IMPORTANT TO USE IT WITH CARE AND IN A RESPONSIBLE MANNER

*** WE RESERVE THE RIGHT TO DENY CLAIMS FOR REPLACEMENT PARTS IF CLAIMS ARE BASED ON REPEATED INTENTIONAL DAMAGE OR INVOLVE MALICE

**** The Defender was not made for the G40, however, many customers have purchased the Defender and made a small modification that allowed it to work extremely well with the G40.

*****Defender plates partially wrap the top of the slide and do not fit large frame Glock pistols, I.E. G21 and all pistols of similar width.*****

(4 customer reviews)

In stock

REVISED DEFENDER INSTALL INSTRUCTIONS *

INSTALL MOUNTING PLATE ON SLIDE AND TIGHTEN THE M3 SCREWS
TILL THEY MAKE CONTACT WITH PLATE. THEN TIGHTEN 1/4 TURN ONLY!
INSTALL THE RED DOT ON THE PLATE AND TORQUE THE 4-40 SCREWS
TO 10 IN/LBS USING A TORQUE WRENCH OR LIMITER

Frequently Bought Together

Do-It-Right Bundle: Check all three of these products and hid "add to cart" for a 15% discount!

+ +
Price for all three: $166.47

The C&H Precision plates are designed, manufactured and shipped from our small family owned business in Coastal Georgia.  Each plate is precision machined to the tightest tolerances on HAAS CNC machines and each plate goes through multiple quality checks before shipping to our customers.

Most of our plates feature a patented stainless steel T-Nut which provide an industry leading six to seven threads of engagement.  Since all the mounting hardware is replaceable, if any mounting hardware is damaged it can be replaced without replacing the entire plate.

SPECIFICATION:

Material: Plates are made from 3D printed polymer.  All mounting hardware is Stainless Steel

Finish:  Plates are MIL-SPEC Type III Hard Anodized – Black

Replaceable 416 Stainless Steel T-Posts for maximum thread engagement

INCLUDED:

Qty 1 – Polymer Optic Plate

Qty 3 – M3 x 6 MM FH Mounting Plate Screws

Qty 3 – 4-40 x .250 FH Holosun 407C / 507C Optic Mounting Screws

Qty 3 – Patented 416 Stainless Steel T-Nuts

DISCLAIMER: This product is not manufactured, authorized, endorsed,
or warranted by GLOCK. GLOCK does not warrant or represent that
this product is compatible with GLOCK pistols.

DRY-FITTING DISCLAIMER:
At C&H Precision, our products are designed and manufactured to meet tight tolerances. Installation can be affected by variations in your plate, hardware, optic, and firearm tolerances. For safe installation and to prevent potential damage to any component, we advise dry-fitting all parts before a full installation. If any problems arise during this process, please reach out to our Customer Service via our contact portal.
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IRON SIGHTS DISCLAIMER:
When making aftermarket firearm modifications, factory components can often become obsolete, particularly when mounting optics on the slide, whether through direct milling or using a plate. Achieving the correct height for low co-witness iron sights depends on factors such as the firearm type, mounting plate, optic, and slide cut. For assistance in determining the appropriate iron sight height for your specific setup, please contact our Customer Service team through our dedicated contact portal.

Additional information

MANUFACTURER

MODEL

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RED DOT

4 reviews for V4 DEFENDER MIL/LEO Adapter Holosun 407C / 507C (Round Face) Fits GLOCK MOS

  1. j.giddings (verified owner)

    I paid for 2 day air and did not get it until 5 days later. Once I received it, I noticed there was no thread locker in the package. When I attempted to install it, both black screws that mount to the T bolt stripped with very little effort. Also the fact that C&H is selling this plastic plate for $80 is bogus saying out its just 3d printed polymer. I have a 3d printer and the entire point of them is to be able to make things for cheaper. There is a gap at the top of the face between the round window from and my actual optic and there is a gap between my optic and the plate underneath. I had called customer service and though the gentleman helping was polite, he was less than helpful basically saying “we will send you new screws”. I expect more to happen, all while I needed in two days because I had a qualification due for work and I didn’t have my firearm ready. Now I am having to wait for the new screws and potentially get a new plate all together for a firearm I’m needing for work and I need to qualify with immediately and it will take even longer. Product quality is not worth $80, customer service is OK at best, and quality of screws is absolutely terrible.

  2. renzen76 (verified owner)

    This adapter plate is so amazingly perfect. It fits so precise, as if I had instead shipped my firearm to your company and yall had custom manufactured and fitted the adapter plate to it specifically. It is an exact match to my firearm’s MOS cut. It installed effortlessly and snug like connecting a jigsaw puzzle piece together. I seriously had a fear that it wouldn’t mount on my gun right away without some kind of modification, special gunsmithing, or doing a return and trying a different/correct adapter plate. But thankfully, it was so easy. Just put it on, torque all fastening screws to a specific inch pounds, then enjoy! Thankfully C & H Precision is very accurate with their website features and their precise description of their products, making it so easy to navigate each page and find exactly what I am looking for, the first time.

  3. Frank Carmona (verified owner)

    Snug fit on my gen5 Glock 19. Feels rugged and sturdy and ready for the range! 24 hour cure on the threads have passed so next stop the range!

  4. joshweiner83 (verified owner)

    Initial review: Arrived on time. Plate was a pretty snug fit in the cut. One of the T-bolt screws had an imperfection in the torques drive which made the screw unusable. Ace Hardware had hex acres that seem to work. There is a slight air gap between the plate and the slide, tho it doesn’t seem to affect zero. Only have 100 rounds down with it so time will tell. Aside from that it does what I wanted it to do.. it protects the sight…

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