Product Overview
This is our standard, heat treated 4140 steel Checkered cam (machine cut textured ends) that's been paired with the redesigned heat treated steel 4140 M508 lever and lifter spring assembly for use in your AR308 variant*
THE LEVER IS CERAKOTED GREEN FOR EASY PART IDENTIFICATION, IT IS MADE FROM STEEL.
*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.
ATTENTION AERO PRECISION M5 owners: this is what you've been waiting for ;)
Reviews
4 Reviews Hide Reviews Show Reviews
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5 GMR Products
Posted by GR on Jun 27th 2025
Have not had time to install/run it yet but the quality and craftsmanship is as always top notch ! If you want well made products that look great and work great then Grey Market Research is the place to buy !
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5 Works very well
Posted by Zanelli on Jun 23rd 2025
Ordered a few of these now, like them A LOT better than the plastic 3d printed ones. It works flawlessly after modifying the upper so that the lever lays flat and doesn't hang up the bolt carrier
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5 308 ss
Posted by John Wick on May 15th 2025
Great quality, fast shipping.
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5 10/10
Posted by Emanuel Ruth jr on May 14th 2025
Who does it better… GMR
