Shop › ADV TECH LOP QUICK STOP ADV TECH LOP QUICK STOP $15.99 ATI Outdoors LOP Quick Stop, Fits Mil-Spec Aluminum Buffer Tubes and Mil-Spec Stocks, Black A.5.10.2564B Quantity: Add To Cart Added! ATI Outdoors LOP Quick Stop, Fits Mil-Spec Aluminum Buffer Tubes and Mil-Spec Stocks, Black A.5.10.2564B