Neverwear "The Warthog" Flat Buffer Spring for AR-15 pattern rifles, *NEW*, made in the USA.
- Swap out that old style spring in your rifle!
The next thing in AR Buffer Spring Technology is the Neverwear Warthog AR15 17-7PH Flat-Wire Buffer Springs™. (It is compatible with the Rifle, the Carbine & the 308). They offer significant, advanced operational enhancements for the shooter who’s serious about performance. The spring never goes solid and there is no kick! The AR15 17-7PH Flat-Wire Buffer Spring retains all essential performance, consistency, and durability advantages. A majority of the improvements stems from the fact the flat wire takes up less room than round wire. The other reason is the majority of the material goes to the inside diameter. The less recoil and less muzzle keeps the sights on target longer. Split time is dramatically improved.
This spring comes with the manufacturer's lifetime NeverWear guarantee!
flat wire spring 
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Buffer Spring