The magpul ctr (compact/type restricted) mil-spec model is a drop-in replacement buttstock for ar15/m16 carbines using mil-spec sized receiver extension tubes.Designed for light fast action the streamlined a-frame profile avoids snagging and shields the release latch to prevent accidental activation.The mil-spec model includes a standard 0.30" thick rubber butt-pad which provides positive shoulder purchase to prevent slippage even with body armor or modular gear.Firearm Type: AR-15Firearm Model: AR-15Material: PolymerFinish: OD GreenFeatures: Removable 0.30" Rubber Butt-PadAdjustment Type: CollapsiblePositions: 6Length Of Pull: 10.50"-13.80"Tube Included: No