Windham Weaponry Carbine Buffer Spring

Windham Weaponry Carbine Buffer Spring Windham Weaponry Carbine Length Buffer Spring for AR15/M16 Wound from high tensile strength spring steel, the Carbine Length Buffer Spring is sized to fit within any M4 type carbine length buffer tube. It provides the resilience to push the Buffer and Bolt Carrier forward in the action cycle while at the same time dampening the recoil.