The Atlas Lite action is a Remington semi-clone action, featuring a side bolt release and trigger pins. There is little modification necessary to use a Remington 700/40x stock or chassis. Anti-Shear Bolt Stop Launched in Quarter 1 of 2020, All Atlas, Nanook, Prometheus, or Atlas Lite actions feature the retrofittable anti-shear pivoting bolt stop. Designed to impact the action instead of the retention screw, this new bolt stop design will fit any existing Atlas action on the market. Gone are the days of broken bolt stop screws or the interim fix of the extreme duty bolt stop. Features One piece Bolt with Aluminum Handle Trigger Pins for fitting into any stock/ Mfg: Kelblys Inc