AR 15 H3 Carbine Buffer

About this product

The AR 15 H3 Carbine Buffer ensures reliable cycling and reduced recoil in carbine-length gas systems, making it a critical upgrade for builders seeking consistency and performance.

What you get

• Premium H3 buffer weight (5.4 oz) for optimal performance in carbine-length AR-15 systems
• CNC-machined steel body for durability and precise fit
• Black oxide finish for corrosion resistance
• Standard carbine buffer dimensions: 3.25″ length, 0.75″ diameter
• Includes three steel weights and a rubber bumper for smooth operation

Build and finish

The AR 15 H3 Carbine Buffer is manufactured in the U.S.A. by Rare Breed Triggers, a trusted name in firearm components. The buffer body is CNC-machined from high-quality steel, ensuring tight tolerances and consistent performance. The black oxide finish provides a durable surface that resists wear and corrosion, even under heavy use.

Internally, the buffer features three steel weights, contributing to its 5.4 oz total weight. This heavier mass is ideal for balancing carbine-length gas systems, reducing bolt carrier group speed and minimizing felt recoil. The rubber bumper at the rear absorbs impact, reducing noise and extending the life of the buffer tube.

Compatible platforms

• AR-15 rifles with carbine-length gas systems
• AR-15 pistols with carbine buffer tubes
• Compatible with standard mil-spec and commercial buffer tubes
• Ideal for builds with overgassed systems or suppressed configurations

Installation notes

Installing the AR 15 H3 Carbine Buffer is straightforward. Simply remove the existing buffer from your carbine buffer tube, insert the H3 buffer, and reassemble the lower receiver. Ensure the buffer spring is properly aligned before reattaching the receiver extension.

For those building or upgrading Polymer80 frames, the AR 15 H3 Carbine Buffer is a reliable choice for maintaining smooth operation in carbine-length systems. Its precision construction and heavier weight make it a practical addition to any modular build.