Kelbly's 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 StopLaunched 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. If you have an older Atlas that is in need of a reliable bolt stop, give us a call to get your anti-shear bolt stop.Features One piece Bolt with Aluminum Handle; Trigger Pins for fitting into any stock/chassis; Tilted TG Mechanical Ejector, Sako Extractor; Three Handle Options- Ball, Teardrop, or Tactical (Teardrop is standard); BlackNitride Finish; Dual Pin .250" Recoil Lug; Short Action Magazine- AICS/AW; Long Action Magazine- ADL/BDL, Also works with AICS CIP Length Magazines (3.850"); For use with Hawkins Precision Direct Mount Rings (Stiller Lone Peak Models); Standard Atlas Rails work as well; Long Action Weight- 26 ounces Short Action Weight- 24 Ounces;