LBE Unlimited AR15 Buffer Tube Kit - H2 Buffer

LBE Unlimited AR15 Buffer Tube Kit - H2 Buffer

Upgrade your AR-15 platform or complete your lower receiver build with the LBE Unlimited 6-Position Mil-Spec Buffer Tube Kit featuring an H2 Heavy Recoil Buffer. Purpose-built for shooters seeking enhanced cycling smoothness and effective recoil management, this comprehensive receiver extension kit includes all the necessary mounting hardware required to fit standard mil-spec carbine buttstocks.

At the center of the kit is a precision-machined 6-position mil-spec diameter buffer tube, allowing users to fine-tune their length-of-pull across six stock positions. The included H2 heavy buffer increases reciprocating mass to slow down bolt carrier velocity, delay bolt unlocking, and mitigate muzzle flip—making it an ideal setup for carbine-length gas systems, short-barreled rifles (SBRs), and suppressed AR-15 builds. The kit comes complete with a carbine-length recoil spring, a standard mil-spec receiver endplate, and a steel castle nut.

Features

6-Position Mil-Spec Diameter Extension Tube:
Machined to tight manufacturing tolerances with a durable black finish, providing six position notches for precise length-of-pull adjustment.

H2 Heavy Recoil Buffer Included:
Features an H2 heavy buffer weight designed to smooth out cycling, reduce felt recoil, and enhance extraction reliability in overgassed or suppressed setups.

Carbine-Length Recoil Spring:
Includes a high-durability carbine-length action spring engineered for smooth compression and reliable bolt return to battery.

Complete Receiver Extension Hardware Kit:
Ships with a standard mil-spec receiver endplate and heavy-duty steel castle nut for straightforward receiver assembly.

High-Quality OEM Build Standards:
Manufactured for long-term service life and dependable performance across duty, home defense, and range applications.

Specifications