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Colt
Overview
The Colt Carbine H3 Heavy Buffer is designed specifically for carbine-length gas systems, providing a heavier weight to enhance the cycling of the action. This H weight buffer helps mitigate recoil and reduce felt muzzle rise, which can improve overall control during rapid fire. It's commonly found in builds focused on tactical applications or where additional stability is desired.
Builders on GunPartPicker first added the Colt Carbine H3 Heavy Buffer to a build in May 2026.
It was out of stock everywhere we track for all of August 2026, and today the one retailer we track is out of stock. Listed prices start at $59.99 at Brownells for when it comes back.
Updated · from real builds on GunPartPicker · Prices checked · refreshed daily across 31 retailers
We ranked every buffer by how often it shows up in real builds on GunPartPicker.
Read the guide: AR-15 Buffer Guide →Check it against the live catalog:
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