Black Rain Ordnance AR15 Carbine Buffer Kit - 5.56mm Length

The Black Rain Ordnance AR15 Carbine Buffer Kit (BRO-CBK) is a complete 5.56mm carbine-length buffer assembly that includes a buffer tube, carbine buffer, carbine buffer spring, castle nut, and flat lock plate. This all-in-one kit provides everything needed to build or replace the buffer system on a carbine-length AR-15.