ArmaLite's scope mounts provide out-standing repeatable engagement w/MILSTD1913 (Picatinny) rail used on all modern AR's, while placing the scopecenterline at the same positions the iron sights of the M15A2 rifle... youuse the same stock weld with the scope that you use with the iron sights,Armalite ships the EX0022 free with all Armalite (not Eagle Arms) flat toprifles and top ends.
