For rifles that were issued, nearly all ended up overhauled and updated in some unspecified time in the future. Most absolutely are a mish-mash of areas and ended up upgraded as necessary. Here are some of People components. Manufactured only as an "overstamped" model (an arsenal-refurbished M1 with new rear https://jaredznzju.jasperwiki.com/6727007/everything_about_ar_9_pistol_8_5_barrel_7_m_lok_rai