The CMMG Buffer Assembly H3 is a heavy carbine buffer designed to smooth out the cycling of AR-15 rifles and carbines. With its H3 weight configuration at approximately 5.4 ounces, this buffer helps tame over-gassed systems, reduce felt recoil, and promote more consistent case ejection for a more controlled shooting experience.

This H3 buffer is ideal for AR-15 builds using adjustable gas blocks, short-barreled uppers, or hotter ammunition where extra mass in the recoil system can enhance reliability. It is well suited for range use, training, and refining a tuned rifle setup, giving shooters a more predictable and comfortable recoil impulse. Backed by CMMG’s reputation for dependable firearm components, this buffer assembly is built for long-term, trouble-free service.

Key Features:

• Manufacturer: CMMG
• Model: Buffer Assembly H3
• Condition: New
• Firearm Accessories Type: Buffer And Buffer Parts
• Color: Silver
• H3 Buffer Weight: 5.4 Oz