AR Rifle Buttstock Extension Tube A2 for .223 or .308 — MBA-1 or MBA-2
AR Buttstock Extension Tube A2 for .223 or .308
- Material: 6061-T6 Aluminum
- Finish: Hardcoat Anodized Black
*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.