LBE Unlimited Carbine Length Recoil Buffer

The LBE Unlimited carbine-length recoil buffer (brand part no. ARBUFF) is the standard-weight buffer used across more AR-15 carbine builds than any other option, built for use with a carbine buffer tube only. Inside the buffer body are three internal steel weights, tuned to work across a wide range of carbine barrel lengths and gas port sizes rather than being matched to just one specific configuration. LBE Unlimited is a US-based manufacturer focused on affordable, reliable AR-15 parts, and this buffer is a straightforward drop-in replacement for a worn, damaged, or missing factory buffer. It’s the buffer most builders reach for first before stepping up to a heavier H, H2, or H3 weight.

Key Specifications

• Standard-weight AR-15 carbine buffer, the most widely used weight class.
• Contains 3 internal steel weights for consistent cycling.
• Built for use with a carbine buffer tube only, not rifle-length tubes.
• Works across many different carbine barrel lengths and gas port sizes.
• Manufactured by LBE Unlimited, a US-based maker of AR-15 parts.

Frequently Asked Questions

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

How many weights are inside? It contains 3 internal steel weights.

Do I need a different weight for my specific gas system? This standard buffer is designed to work across many carbine barrel lengths and gas port sizes, though some builds may run smoother with a heavier H, H2, or H3 buffer.

Buy the LBE Unlimited Carbine Length Recoil Buffer

Keep your carbine cycling reliably with a proven standard buffer. Order the LBE UNLIMITED recoil buffer from our AR buffer system lineup, and our Lubbock, Texas team can help confirm buffer tube compatibility before it ships.