Ruger - AR Buffer Tube Kit - 91006

Armaspec Carbine Buffer Tube Kit, Black - Reliable Performance and Durability - ARM621-C

ONE HORSE AR15 Buffer Tube Kit Carbine Buffer

Armaspec SRS Gen 4 Buffer-9 Kit, Black - Advanced Buffer Technology - ARM263-9

LBE Unlimited AR15 MIL SPEC BUFFER TUBE Kit

GUNTEC AR15 PISTOL BUFFER TUBE KIT ANODIZED BLACK

SONS OF LIBERTY GUN WORKS Intermediate 10-Pos Maritime Buffer Tube Kit

Tacfire Buffer Tube Castle Nut for AR-15 - Black, Essential for Assembly - MAR039