The sight itself is lower quality: standard hole is fine and centered, but the long range (L) has the hole drilled slightly to the right (at least on mine). First, the flat spring is weak and the sight flips forward and back rather easily. I was issued an A1 years ago and I just wanted to build a memory piece. Before I get into CONS, I want to make it clear that I would buy again, because I don' t plan to go into Vietnam with my retro build - it' s just basic fun for me. I bought this highest priced version and was expecting more. I was a little disappointed in the quality for the price. I recommend buying a 1/16 roll pin starter and a flat punch for the pin. Battlefield- Will be damaged, numbers may not be visible, may have chipping, may be discolored (no preference will be given to type of damage) Choose Black or Grey to better match the color of your Upper. Understand this is not verified, just our guess as of now. If is our belief that the smaller sized font on the Wheels are earlier Generation Wheels, possible Gen 2. This is the set of rear sight parts you need for a multitude of upper receivers, as well as some stand alone rear sight units - including Canadian C7/C8 builds using the C7 (M16A1E1)upper receiver and Daniel Defense A1 Rear Sight Units. These are used Colt parts that came off old rifles in Good condition. Original Colt complete Rear Sight Assembly for all Colt AR-15 / M16 / M16A1 models before the introduction of the M16A2 sight in 1983.

Colt ar 15 a3