Product Overview
Alexander upper receiver ar15.17hmr 18" s/s fluted w/kit Other Features: Fits standard ar-15 lowers, 1/2-28" threades stainless fluted barrel w/a2 flash hider,aluminum m-lok handgaurd ,2-10rd mags includes.17hmr conversion kit contains recoil cassette, magazine well insert, and magazine catch to fit most standard ar-15 lowers
