Product Overview

This is our standard, heat treated 4140 steel CHECKERED cam & M508 lever , along with a lifter spring assembly (machine screw/lock washer/spring) and paired with a machine cut STRAIGHT trigger and stainless machine cut detent for a complete kit for use in your AR308 variant*

*Please see the written instructions on the installation of this Push Button Safety.

https://greymarketresearch.net/m508-308-info-and-instructions/

There are specific bolt carrier dimensions in order for this Safety to work properly in your AR308 variant. Some bolt carriers are not compatible with the Push Button Safety system. Some minor fitting of the lever and the upper receiver WILL be required. This is not a "drop in" part. We do not accept returns for modified parts.

Reviews

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5
I forget if this is the 3rd or 4th or 5th

Posted by Zanelli on Jun 30th 2025

Yeah, I've ordered a bunch so far. Several for the .308, and at least one for the smaller platform. Probably going to order more, TBH. The quality is awesome, they work, the prices are significantly less than the others on the market which use cast parts, I might add. VERY happy with GMR.