LBE Unlimited H3 Heavy Buffer Gold AR-15 Carbine Length ARBUFF-H3 UPC 784682014363
Product Description
The LBE Unlimited ARBUFF-H3 is an H3 heavy recoil buffer precision-engineered for AR-15 and M4 carbine-length receiver extensions. Weighing in at approximately 5.4 ounces, this heavy buffer utilizes three internal tungsten weights designed to slow down the bolt carrier group's rearward cyclic rate. This extra reciprocating mass softens felt recoil impulse, delays chamber unlocking, and increases extraction reliability on over-gassed, short-barreled rifle (SBR), and suppressor-host carbine setups.
Constructed with a durable machined aluminum body, the buffer features an eye-catching gold anodized finish that offers high corrosion resistance and easy visual identification inside the buffer tube. The extended bumper on the rear pad absorbs harsh steel-on-aluminum impact against the rear of the buffer tube, preventing receiver extension damage and reducing overall internal component wear during rapid-fire sequences.
By delaying unlocking time slightly, the H3 buffer allows chamber pressures to drop significantly before the spent casing is extracted, virtually eliminating rim shear, blown primers, and failure-to-extract malfunctions. The ARBUFF-H3 is a direct drop-in upgrade for standard carbine buffer tubes using standard carbine buffer springs.
Armorer Bench Notes & Real-World Staging Guidance:
Fitment Matrix: Fits standard mil-spec and commercial-spec AR-15 / M4 carbine-length receiver extensions (buffer tubes). Not compatible with rifle-length (A2) buffer tubes unless utilizing an AR rifle-to-carbine buffer spacer.
- Ensure the firearm is completely unloaded: remove the ammunition source, pull the charging handle rearward, and visually inspect the chamber to verify it is clear.
- Push out the rear takedown pin and pivot the upper receiver away from the lower receiver.
- Depress the buffer retainer pin at the forward mouth of the buffer tube using a punch or small tool, then carefully slide the existing buffer and buffer spring out of the receiver extension.
- Inspect and clean the interior of the buffer tube, applying a light coat of gun lubricant to the spring and interior walls.
- Slide the LBE Unlimited H3 Gold Buffer into your carbine buffer spring, ensuring the spring seats fully around the buffer neck.
- Insert the spring and buffer assembly back into the buffer tube until the front face clears the buffer retainer pin and locks into position, then reassemble the upper and lower receivers.
Key Features
- H3 Heavy Weight Profile (5.4 oz): Loaded with three dense tungsten internal weights to slow down cyclic rate and mitigate felt recoil.
- Optimized for Suppressed & Over-Gassed Firearms: Delays chamber unlocking time to reduce gas face blowback and improve extraction timing.
- Gold Anodized Finish: Provides surface corrosion protection while enabling rapid visual weight identification during armorer maintenance.
- Durable Aluminum Shell: Precision-machined outer casing engineered to withstand harsh reciprocating forces.
- Impact-Absorbing Rubber Bumper: Heavy-duty rear bumper prevents structural metal-on-metal impact at the rear of the receiver extension.
- Drop-In Installation: Directly replaces standard weight (3.0 oz) carbine buffers without requiring gunsmithing or permanent modifications.
Product Specifications
- Brand: LBE Unlimited
- Model/Series: H3 Heavy Buffer
- MPN / SKU: ARBUFF-H3
- UPC: 784682014363
- Weight: 5.4 oz
- Platform Fitment: AR-15 / M4 / AR-9 (Carbine Length Receiver Extensions)
- Body Material: Machined Aluminum
- Internal Weights: 3x Tungsten
- Finish: Gold Anodized
- Country of Origin: USA
