The top of the receiver had to be strengthened to maintain structural integrity. You can get taller sight post inserts to cure that, not do the RIBZ, or just start off with the correct fsb to begin with. You may run out of front sight post adjustment.
#A2 carry handle sight markings install
When Colt designed the original flat top upper receivers for the M4 carbine they couldn't just hack off the carry handle and install a rail. One thing you might have trouble with though is running an A2 and a detachable carry handle modified for revised improved battle sight zero. This situation may not be a real issue as long as the rifle zeroes but it certainly looks funny and it isn't right. The problem here is that the manufacturer assembled the rifle with a standard early front sight assembly designed for rifles with integral carry handles rather than one meant for flat top receivers. Upon dialing in a typical 25-yard military zero with the detachable carry handle or a folding backup rear sight you notice the front sight post is screwed almost completely out of the front sight housing. It comes equipped with a built-in A2 dual aperture rear flip-up sight with adjustable windage and elevation settings. Notice the F mark on the front sight base. Original purchase invoice from July 2017 Below are detailed photos of the complete rifle, packaging and accessories. Aircraft grade aluminum and steel in construction, the carry handle is both sturdy and functional. on this page are photos of the Colt LE6920M (Mexico) rifle that I purchased in July of 2017 for the paultry sum of 700.00. Here is a typical scenario: You get a killer deal on a used AR-style carbine at the local gun emporium and you rush to the range to test-fire and zero your new prize. This AR-15 detachable carry handle is the classic add-on to any AR-15 rifle build. His website is He will be offering gunsmithing tips and tricks on Fridays. Gus Norcross, originally trained on National Match rifles and pistols by the National Guard Marksmanship Training Unit specializes in Garands, M14s and 1911s at his small shop on the coast of Maine.
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