Wolff Gunsprings AR-15 Rifle Length Extra Power Recoil Spring

Wolff's extra power action spring for AR-15 and M16 rifles that use the rifle length buffer system. It is the spring that sits in the buffer tube behind the buffer and pushes the bolt carrier back into battery. This is the spring only; no buffer is included.

Wolff rates its extra power springs at about 15 percent over stock, and says the extra power helps the bolt close positively. It is not the carbine spring; Wolff lists a separate carbine action spring for CAR-15 and M4 pattern guns.