The M16A2 buttstock is about 5/8" of an inch for a longer time then the sooner designs. Because of the greater size it used an extended buttstock screw as well as a spacer. The swivel is mounted nearer into the buttplate. This buttstock is at this time applied to the https://victordirectory.com/listings493784/helping-the-others-realize-the-advantages-of-colt-m16a1-for-sale