AR 15 H3 Carbine Buffer

Here’s the clean HTML product description:

“`html

The AR-15 H3 Carbine Buffer delivers consistent recoil mitigation for carbine-length gas systems, engineered specifically for heavy-use builds where bolt carrier group timing matters.

What you get

• H3 buffer weight (5.4oz tungsten/steel composite)
• Precision-machined 6061 aluminum housing
• Type III hardcoat anodized finish
• Standard carbine buffer length (3.25″)
• Compatible with mil-spec buffer tubes

Build and finish

The H3 buffer’s tungsten-weighted design addresses overgassing issues common in short-barreled AR-15s and suppressed setups. Unlike standard carbine buffers (3.0oz) or even H2 variants (4.6oz), the 5.4oz mass slows bolt velocity without requiring adjustable gas blocks—particularly useful for Polymer80 builds where gas system tuning can be restrictive.

Rare Breed’s machining process maintains ±0.001″ tolerances on all critical surfaces. The aluminum housing features a Type III hardcoat anodizing that withstands carrier tilt wear better than commercial-grade finishes. Internal weight stacks use press-fit tungsten slugs instead of loose steel shot, eliminating rattle during cycling.

Compatible platforms

• AR-15/M4 carbines with carbine-length buffer tubes
• Pistol-caliber carbines (9mm/.40/.45 ACP with appropriate adapters)
• Polymer80 rifle-caliber builds using mil-spec lower parts kits
• Suppressed SBRs (under 14.5″ barrels)

Installation notes

Drop-in replacement for existing carbine buffers. No tools required beyond removing your buffer retainer pin. Pair with standard carbine springs—no need for extra-power springs unless running exceptionally heavy bolt carriers.

For builders working with Polymer80 frames, this buffer solves the common issue of excessive bolt bounce in compact rifle builds. The additional mass maintains reliable cycling while reducing wear on rear takedown areas—a frequent pain point in polymer receiver setups.

“`