E., buffer tube) Together with the adoption of the M16A2. Pretty much each individual lower receiver designed now has the improved lower receiver. Another bottom-50 % aspect that is certainly right would be the existence of overtravel stops above the “Harmless” and “Vehicle” markings. Kudos to Colt for Placing “AUTO” https://laneynyqx.eedblog.com/31255712/rumored-buzz-on-bright-stainless-government