The LBE Unlimited H2 Heavy Gold Buffer (model ARBUFF-H2) is a carbine-length recoil buffer for AR-15/M16 platforms. It serves as a direct drop-in replacement for a standard carbine buffer (no modifications needed) and is designed to add weight to the buffer system.
Key Specifications
- Weight: 4.7 oz
- Internal Weights: 2 tungsten + 1 steel (tungsten is denser, allowing more mass in the same size)
- Body: Aluminum with gold anodized finish
- Length/Type: Carbine length (for use with carbine buffer tubes only)
- Made in: USA
- MSRP: Around $49.99 (street price often $35–$55 depending on retailer)
Purpose and Benefits
LBE offers a series of heavy buffers (H1, H2, H3) to help tune AR-15 reliability and recoil. The H2 sits in the middle:
- Standard carbine buffer: ~3 oz
- H1: ~3.8 oz
- H2: 4.7 oz
- H3: ~5.4–5.6 oz
The extra mass slows the bolt carrier group (BCG) velocity. This can:
- Reduce felt recoil
- Improve extraction/ejection patterns
- Help with over-gassed setups, short-barreled rifles (SBRs), suppressed builds, or certain ammo types that cause excessive bolt speed or premature unlocking
Many users find an H1 or H2 ideal for most standard AR-15s, while H3 suits more extremely over-gassed or very short configurations. If your rifle has reliability issues (e.g., violent cycling, brass marks at 3–4 o'clock, or failure to eject properly), stepping up to an H2 is a common, inexpensive tuning step.
Compatibility
- Works only with carbine-length buffer tubes (not rifle-length or A5 systems).
- Compatible with standard AR-15/M16 BCGs and recoil springs.
