This Guntec USA combo pairs a 9mm buffer with a carbine-length spring for AR9 pistol caliber builds. The 8.2-ounce, 4-inch buffer has a stainless body and clear polyurethane bumper to help manage the heavier blowback recoil of 9mm. The chrome spring is Teflon coated for smooth cycling.
- Brand: Guntec USA
- Caliber: 9mm Luger (AR9)
- Buffer: 8.2 oz, 4 in long
- Buffer body: Stainless with polyurethane bumper
- Spring: Carbine length, Teflon coated chrome
- Made in USA
- Manufacturer part number: BUF-SPR-9
