This cookie is set by GDPR Cookie Consent plugin. ![]() The cookie is set by GDPR cookie consent to record the user consent for the cookies in the category "Functional". The cookie is used to store the user consent for the cookies in the category "Analytics". Set by the GDPR Cookie Consent plugin, this cookie is used to record the user consent for the cookies in the "Advertisement" category. These cookies ensure basic functionalities and security features of the website, anonymously. Necessary cookies are absolutely essential for the website to function properly. I attribute the maintaining of zero to the tight fit of the Holosun 509T to the CHPWS plate. This induces very slight rotational wobble in the optic, but it is secure enough to keep rounds on a B8 repair center at 25 yards in this condition. The plate itself is firmly attached to the slide, with no signs of loosening. Despite repeat tightening, the screw continues to loosen by 1/4 turn after roughly 50 rounds. ![]() The greatest movement of the retention screw was 1/4 turn, then staying firm from there. Cut LooseĪround the 2,700 round mark my Holosun 509T began loosening from the plate. The remaining ~3,600 rounds were using the factory barrel. This includes the 50x NATO rounds and 6x +P Gold Dot rounds. Roughly 175 rounds of the above were fired using a KKM match grade barrel and their matching four port compensator. ![]() Round Count and Class TimeĪs of this review, I have fired 3,838 through my Glock 19 using the C&H Precision plate and Holosun 509T combo. I am able to use my Ameriglo GL-429 iron sights with this C&H Precision plate, which likely would not have been possible with a stock MOS plate. As the Holosun 509T is a taller optic, this can sometimes be problematic. This also helps with compatibility with varying heights of backup iron sights. These measures help with your bore offset at varying distances, along with very slightly reducing felt recoil. Additionally, this slightly reduces height over bore, along with lowering the center of gravity for the optic. This ensures the plate stays secure to the slide under far more punishing conditions than what OEM offerings can endure. Thanks to the stronger, yet thinner construction of this plate, users get far more thread engagement into the slide than with traditional MOS plates. I surely wouldn’t regret greater security, but I may regret forgoing it later down the road. While this second smattering of thread locker isn’t required or even often recommended, it’s extra peace of mind for me. For added measure, I threw some more Vibratite VC3 on the 509T’s screw as well. After throwing some of the included Vibratite VC3 on the screws, I mounted the plate to my Glock 19 and my Holosun 509T to the plate. I picked up my CHPWS MOS plate in January 2021. The screws provided by C&H Precision for mounting the plate to the slide, and optic to the plate are stainless steel. Thickness is kept consistent between 0.095 to 0.099 inches. The plates themselves are made from 6061 aluminum, with black anodizing. C&H plates are significantly slimmer and made of superior materials. One of the big stand-outs of the C&H Precision plates compared to factory MOS plates is the construction.
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