The LBE Unlimited H2 Heavy Carbine Buffer (brand part no. ARBUFF-H2) is a heavier-than-standard buffer built to slow bolt-carrier-group velocity on AR-15/M16 carbines. LBE Unlimited packs two tungsten weights and one steel weight into the buffer, one of three heavy-buffer options (H1, H2, H3) the company offers so shooters can match buffer weight to their barrel length, gas system, gas port size, and ammunition. It’s built for a carbine buffer tube only. Among AR buffer systems, this H2 buffer favors builders tuning reliable cycling on a carbine-length gas system.

Key Specifications

• Built for AR-15/M16 platforms.
• Classified as an H2-weight heavy buffer.
• Contains two tungsten weights and one steel weight.
• Sized for a carbine buffer tube only.
• Manufactured in the United States by LBE Unlimited.

Frequently Asked Questions

How do I know if I need an H1, H2, or H3 buffer? The right weight depends on barrel length, gas system length, gas port size, and the ammunition used — an H2 is a common middle-ground choice for many carbine setups.

Will this fit a rifle-length buffer tube? No, this buffer is sized for a carbine buffer tube only.

Buy the LBE Unlimited H2 Heavy Carbine Buffer

Dial in reliable cycling on your AR-15/M16 carbine with this US-made H2 buffer from LBE Unlimited. Order it from our Lubbock, Texas gun shop for fast shipping.