Ar-15/M16 Fixed Stock To Carbine Spacer - 9mm Fixed Stock Buffer Tube Spacer
Ar-15/M16 Fixed Stock To Carbine Spacer - 9mm Fixed Stock Buffer Tube Spacer, Spacer - Machined Delrin. 2-5/8" (5.4cm) long. Fits buffer tube for standard, fixed A1/A2-style AR-15/M16 buttstock. Mfg: Rock River Arms