Guntec USA AR-9 9mm 8.2 oz Carbine Buffer & Spring Combo

The Guntec USA AR-9 Buffer & Spring Combo is a drop-in carbine-length buffer and spring set purpose-built for 9mm AR-15 pistol caliber carbine (PCC) and AR-9 builds. Designed to provide reliable cycling and smooth recoil management, this combo pairs a heavy 8.2 oz solid steel buffer with a carbine-length spring finished in chrome with a slick Teflon coating for reduced friction and consistent operation.

The buffer measures 4" in length and weighs in at 8.2 oz, giving a 9mm blowback AR the mass it needs to delay the bolt long enough to ensure reliable feeding, extraction, and ejection. The included Teflon-coated chrome carbine spring matches the buffer's weight profile and is built to mil-spec dimensions for a drop-in fit in any standard carbine or pistol buffer tube.

Whether you're assembling a new AR-9 from the ground up or upgrading an existing PCC, the Guntec USA BUF-SPR-9 combo offers a straightforward, dependable solution. It's a true 9mm-specific setup designed for the unique cycling characteristics of pistol-caliber blowback AR-pattern rifles.