The M16A2 buttstock is about 5/eight" of an inch extended then the sooner designs. Due to the increased duration it employed a longer buttstock screw and also a spacer. The swivel is mounted nearer to your buttplate. This buttstock is at the moment used about the M16A4: As far as https://phase2directory.com/listings12967872/not-known-details-about-colt-combat-elite-commander-45-acp