The Luth-AR 16" Lightweight Complete Upper Barrel Assembly Starts with a 16"" 5.56mm Lightweight barrel made from 4140 Chrome Molly with a 1-9" twist mated to a A3 Flattop receiver which includes a...
Get extra height for optimal sight alignment. The 1/2-Inch Picatinny Riser is ideal for AR and M16 receivers and other tactical rifles.Features :0.5 inches high1.5 inches long