Complete 10oz extra-heavy buffer kit for 9mm, .40 S&W, and .45 ACP AR-15 platforms. Includes carbine buffer spring and works with both GLOCK and Colt-style magazines.
This complete buffer system is purpose-built for shooters running 9mm, .40 S&W, or .45 ACP in an AR-15 platform. The 10-ounce weight provides the mass needed to properly cycle these pistol-caliber cartridges with reliable function.
Dual Magazine Compatibility Works seamlessly with both GLOCK-style and Colt-style magazine feeds, giving you flexibility in your platform choice.
Purpose-Built Weight The 10-ounce mass is specifically calibrated for reliable cycling of lighter pistol-caliber loads. This prevents short-stroking and ensures consistent performance across all three calibers.
Complete System You get everything needed for installation—no additional parts required. The included carbine spring pairs perfectly with the buffer weight.
Builders and shooters who want a turnkey solution for 9mm, .40, or .45 ACP AR-15 conversions. Whether you're running a dedicated pistol-caliber carbine or converting an existing platform, this kit delivers the reliability you need.