The M16A2 buttstock is about five/8" of an inch for a longer time then the sooner models. Due to enhanced size it applied an extended buttstock screw and also a spacer. The swivel is mounted nearer towards the buttplate. This buttstock is presently utilised to the M16A4: And now that https://archeroctvb.wikiexpression.com/3794668/the_basic_principles_of_colt_combat_unit_rail_gun_45