The Outerwild carbine flat wire buffer spring will bring a whole new feel to your shooting experience. Made from 302 stainless steel, this spring will decrease the "twang" you normally hear when firing and increases forward pressure to assist in preventing bolt bounce, stripping rounds from the magazine and positive chambering. The spring creates a notable difference in "feel" when firing, it is much smoother and reduces some of the sharp recoil feel, especially in over gassed rifles. Fits all standard AR15 carbine buffer tubes.