FM-PRODUCTS FM-9 LOWER BUFFER TB/CASTLE NUT/END PLT/SAFE-T-FIRST TRIG/SELECT/GRIP/BRACE NO ADAPTER

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

JP Enterprises Enhanced Carbine Buttstock Castle Nut, Black

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

TacFire 6-Postion Mil-Spec Buffer Tube Kit w/Dual Loop End Plate, Black

CMMG Barrel Nut, Black - Essential Component for Secure Barrel Installation and Reliable Performance - 55DA244

GUNTEC AR15 9 PISTOL BRACE BUILD KIT & BUFFER TUBE BLACK

GUNTEC AR15 PISTOL BUFFER TUBE KIT ANODIZED BLACK