Expo Arms H2 AR-15 Carbine Buffer with Flat Dark Earth Bumper

Manufactured by Expo Arms
Manufactured by Expo Arms
17 Reviews

In Stock

Standard orders will ship out 1 business day if ordered by 3:30 pm CST, Monday-Friday. FFL orders will ship within 5 business days or less as long as we have the information for the transfer destination.

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The Expo Arms H2 Carbine Buffer is an easy and inexpensive upgrade for your AR-15. Whether your rifle is over gassed or you're simply looking to reduce felt recoil, a 4.6 oz heavy buffer can be a significant improvement over the standard AR-15 carbine buffer. These buffers feature a machined aluminum body with a durable black hardcoat anodized finish and flat dark earth rubber bumper to dampen recoil.

This 3.25" buffer is compatible with AR-15 MIL-SPEC and Commercial spec receiver extensions or 8" GI-spec AR-10/AR-308 receiver extensions.
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BrandExpo Arms
TypeBuffer - H2 Heavy Carbine
Weight4.6 Oz

WARNING: This Product can expose you to chemicals which is known to state of California to cause Cancer and Reproductive Harm. For more information, see www.p65warnings.ca.gov

California Prop 65 warning

 WARNING: This product can expose you to chemicals, which are known to the State of California to cause Cancer and Reproductive Harm. For more information go to www.P65Warnings.ca.gov.

Ratings & Reviews

17 reviews


Great service


Used this to replace my 3oz. buffer in my sig m-400. Functions flawlessly with reduced recoil and back on running coyotes faster. Shipping only took 2 days. Outstanding job PA 2 thumbs way up!


by -

Works perfectly fine compared to other high dollar brands.

From not functioning to 100 percent function

by -

This was just the fix I needed to get my echo trigger and new build running properly in my 7.5 ar pistol in 556. No more failure to feed or fire. The pistol went from not function what so ever to 100 percent function thanks to this buffer! So highly recommend for certain builds if you need this weighted buffer.

Not marked with H2

by -

These are not stamped or marked in any way to identify them from standard weight buffers. Very disappointed in this. Color coding the bumper is meaningless, the face needs to be stamped to quickly identify it as an H/H2/H3 etc buffer without having to pull it out and weight it every time. I swap out buffers often. All other H/H2/H3 buffers have marks, why did they skip out on these?

Love it!

by -

Replaced 3oz buffer with this one in my 7.5 pistol build. Runs better & such a great price I got one for my buddy too! Highly recommend . Thanks P A!


by -

MUST HAVE FOR (PISTON OPERATED UPPERS) due to higher "velocities"..
<br>Such as "Adams Arms" piston kits, etc. Prevents "LIGHT PRIMER STRIKES".
<br>Weighed compared to factory upper buffer...
<br>FACTORY....... 3.25OZ
<br>EXPO H2........ 4.50OZ

Excellent Quality, Great Price, Super Fast Shipping !! If You Need It Fast, Get It Here !!!!!

by -

Nice Quality, Wish They Would Be Stamped, Works Great

Works good for my 10.5 upper


I ordered this and the discounted buffer spring. Both arrived carefully packaged and in perfect condition. Fast shipping and the best prices.

Great buffer at a reasonable cost.

by -

Works great! Tamed the recoil impulse down on my overgassed pistol. Took a marker and wrote H2 on the side and etched H on top.

It's an H2 Buffer

by -

Run this in a 5.56 middy AR and it smoothes out recoil (as if there was much). No issues with low power Wolf steel ammo either. Front face is not stamped with an "H2". I don't switch out buffers, therefore the color code system used by Expo Arms is a non-issue for me.