Rock River Arms AR-15 Rifle Buttstock Extension Tube – A2
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Rock River Arms AR-15 Rifle Buttstock Extension Tube – A2

AR Buttstock Extension Tube A2

Material: 6061 T6 aluminum impact extrusion

*Installing A2 rifle buffer system on a carbine may affect function.

**There is no difference between a .223 and .308 A2 tube, they are the same.