Drop-in replacement for AR15/M16 carbines using commercial sized receiver extension tubes * Designed for light, fast action the streamlined A-frame profile avoids snagging and shields the release latch to prevent accidental activation * Features a supplemental friction lock system that minimizes excessive stock movement for enhanced firearm stability and accuracy * Made in USA * Incorporates an ambidextrous QD sling mount that will accept any push-button sling swivel