The Colt Carbine H3 Heavy Buffer is a purpose-built recoil buffer designed to improve the cycling and overall reliability of AR-15 and M16 carbines. Using a heavier internal weight stack than standard carbine buffers, it helps control bolt movement and smooth out the firing cycle, especially in rifles with shorter gas systems or higher round counts.

This heavy buffer is ideal for shooters who want a more controlled, predictable recoil impulse during range sessions, training, or competition with their AR-15 carbine. By reducing bolt bounce and slowing the action slightly, it can contribute to smoother operation and more consistent performance with compatible setups. Backed by Colt’s long-standing reputation for dependable AR-pattern components, the Carbine H3 Heavy Buffer is a straightforward upgrade for serious enthusiasts.

• Manufacturer: Colt
• Model: Carbine H3 Heavy Buffer
• Type: AR-15/M16 carbine recoil buffer
• Construction: Two tungsten weights and one steel weight with aluminum exterior
• Compatibility: Fits AR-15 and M16 carbine buffer tubes and uses standard AR-15/M16 carbine buffer springs