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1/16 Update - we've added 7.5oz AR15 carbine buffers to our product line

1/20 - the last of the Kit-FDE cerakoted complete kits are $15 off and wont be restocked. 

 

 

 

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M508 Checkered -AR308 compatible cam & lever kit

GMR

(5 reviews) Write a Review
$85.00
M508 Checkered -AR308 compatible cam & lever kit
SKU:
M508 Checkered C&L set
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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/

The lower rear section of the bolt carrier must measure 2.20"+- in order for the Safety to work correctly. Using a 2.40"+- BCG can damage or break the lever. The upper receiver must be trimmed flush with the rear take down lug to give the lever the proper clearance. This is not a "drop in" part. We do not accept returns for modified parts. 

Reviews

(5 reviews) Write a Review

5 Reviews Hide Reviews Show Reviews

  • 5
    PSA Gen3 PA10 requires some fitting, runs great!

    Posted by Seb on Jul 28th 2025

    So pleased with this design. We'll see how long the lever spring lasts!

  • 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 !

  • 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

  • 5
    308 ss

    Posted by John Wick on May 15th 2025

    Great quality, fast shipping.

  • 5
    10/10

    Posted by Emanuel Ruth jr on May 14th 2025

    Who does it better… GMR

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