Everything about ar15 lower parts
On the subject of lowers, cast 7075/76 aluminum lowers advertised as “mil-spec” really should be the baseline for just a Make, though a lower parts package, buffer tube, and stock/brace aren't an excessively complex endeavor to set up accurately.The aluminum alloy 6061-T6 will not be MIL SPEC, but don’t let everyone let you know that it isn�