The M16A2 Buttstock is about five/eight" of the inch longer then the sooner styles. As a result of enhanced duration it applied a longer buttstock screw plus a spacer. The swivel is mounted closer into the buttplate. This buttstock is at present made use of within the M16A4: I say https://raymondfgfcz.link4blogs.com/52954741/indicators-on-colt-m16a1-for-sale-you-should-know