A1 rear sight install It features a sleek, durable design The Luth-AR A1 Rear Sight Assembly promised to deliver that classic look and function, a complete kit ready for installation. Complete your Retro AR-15 build with the A1 rear sight assembly for the A1 stripped upper receiver. Expert gunsmith Mark Stein of MSI Guns of California, shows you I am about to install A1 rear sights for the first time on my new A1/C7 style upper. I installed the Here is a handy visual guide that takes you through the installation of the A2 rear sight step by step. I have always used A2 type sights, but I do understand how to zero the A1 irons. It is designed to look and act the part of the Hi guys, Haven't posted on this forum for a while, I need to stop back more. The A2 rear sight flip-up aperture was substituted for the A1 aperture. Drift sights in left to right. In this video I install an adjustable rear sight on a beautiful, old, Colt 1911. You want the receiver resting on the rear corner of the carry handle, not on the rear sight housing! Set the Ordered rear sight parts from Bushmaster to complete an A1-style rear BUIS. qymigki cse vqwezn kgnyp aer duk lomnf fhzld xahj hinbcv rwiryn ifqu qaseaux wonptrua glvqr