The M16A2 buttstock is about 5/eight" of an inch extended then the earlier styles. As a result of amplified size it used a longer buttstock screw in addition to a spacer. The swivel is mounted nearer for the buttplate. This buttstock is currently applied within the M16A4: It has the https://gold-cup-trophy-colt-4534444.wikienlightenment.com/7318355/indicators_on_gold_cup_trophy_colt_45_you_should_know