Neptune Defense Variable Pitch AR-15 Carbine Buffer Spring

Tactical Springs LLC Intermediate Power Hot White Carbine Buffer Spring

Tactical Springs LLC Reduced Power Carbine Buffer Spring

Sons Of Liberty Gun Works Buffer Retainer Spring for AR-15 Stainless

VLTOR SP-1 Buffer Kit SP-1, Includes 3oz Carbine Buffer, Carbine Spring, Fits AR-15, Matte Finish, Blacks AR15 SP-1

Rock River Arms Carbine Buffer Ar-15 Recoil Reduction and Smooth Cycling

Luth-AR Mil-Spec Dia Carbine Buffer Tube Complete Assembly Fits AR-15 Rifles, with Buffer, Buffer Tube, & Spring, Black 223-M-BAP

White Label Armory AR15 AR10 Buffer Retain Spring 10 Pack