Description
LBE Unlimited ARBUFF-H3 Heavy Buffer for Suppressed and Over-Gassed AR-15s
The LBE Unlimited ARBUFF-H3 is the heaviest carbine-length recoil buffer LBE makes. At 5.6 oz with three tungsten weights in an aluminum body, it is built for the rifle that cycles too hard: the suppressed build, the short-barrel setup, the over-gassed AR-15 that beats its bolt carrier and throws gas back at the shooter. If your rifle runs violent, this is the buffer you reach for. Made in the USA.
Why a Suppressor Over-Gasses Your AR-15
Adding a suppressor traps and redirects gas, which raises back pressure and pushes more gas into the action than your rifle was tuned to handle. The result is a rifle that unlocks earlier and cycles faster and harder than it should: heavier felt recoil, more bolt bounce, faster wear, and more gas venting back toward your face. A short barrel on a carbine-length gas system produces the same over-gassed behavior. The most direct mechanical fix is to add mass to the buffer.
What the H3 Does
Buffer weight controls the reciprocating mass of your carrier group. A heavier buffer takes more energy to drive rearward, so it slows bolt carrier velocity, delays unlock slightly, and settles the action down. On a suppressed or over-gassed rifle that means reduced bolt bounce, softer felt recoil, and a smoother, more consistent cycle. Tungsten is denser than steel, so the H3's three tungsten weights pack the most mass LBE offers into a standard carbine-length body. Many shooters run a heavier buffer like the H3 alongside an adjustable gas block or a heavier action spring as part of dialing in a suppressed setup.
H1 vs H2 vs H3: Why Choose the H3
LBE offers three carbine heavy buffers. H1 is the lightest, H2 is the middle, and the H3 is the heaviest. Most standard carbines run well on an H1 or H2. The H3 is for the heavy end of the problem: suppressed, short-barreled, or otherwise over-gassed rifles that are still cycling too aggressively on a lighter buffer. If you are running a can and the rifle feels harsh and gassy, the H3 gives you the most mass of the three to slow it down.
Specifications
- Model: LBE Unlimited ARBUFF-H3
- Type: H3 heavy carbine-length recoil buffer
- Weight: 5.6 oz
- Internal weights: 3 tungsten
- Body: aluminum
- Platform: AR-15 / M16
- Origin: Made in the USA
- UPC: 784682014363
Fitment
For use with a carbine-length buffer tube only. Do not use in a rifle-length receiver extension.
