The M16A2 buttstock is about five/eight" of an inch extended then the sooner products. Due to the enhanced duration it utilised an extended buttstock screw in addition to a spacer. The swivel is mounted closer towards the buttplate. This buttstock is now applied to the M16A4: AR15.COM is the world's https://rowanoqpmj.wikisona.com/1096423/the_greatest_guide_to_colt_m16a1_for_sale