AR-15 5.4oz H3 Buffer - 37823

Optimize the performance of your AR-15 with the AR-15 5.4oz H3 Buffer, a precision-engineered heavy buffer designed for carbine-length receiver extensions. This 5.4-ounce buffer delivers enhanced cycling control for demanding builds, including suppressed rifles and short-barreled configurations.

Key Features

• 5.4 oz weight achieved with three internal sliding brass weights in a steel carbine buffer body
• Drop-in compatibility with mil-spec carbine buffer tubes and springs
• Dimensions: 3.25 inches long, 1 inch wide, 1 inch high for precise fit
• Constructed for reliable operation in 5.56 NATO and compatible platforms

Performance Benefits

Heavier buffers like the H3 slow the rearward travel of the bolt carrier group, which helps tame over-gassed systems common in short-barreled or suppressed AR-15s. Shooters experience a smoother recoil impulse, reduced bolt bounce, and potentially extended service life for critical components. This buffer is particularly effective when paired with pistol-length or carbine gas systems on barrels under 16 inches, or when running a suppressor that increases back pressure.

Specifications

• Weight: 5.4 oz
• Length: 3.25 in
• Width: 1 in
• Height: 1 in
• Internal Weights: Three brass
• Buffer Type: Carbine H3

Proper buffer weight selection depends on your specific gas system, barrel length, ammunition, and whether a suppressor is used. Always test function with your chosen loads to confirm reliable feeding, extraction, and lock-back on empty magazines.

Upgrade your AR-15 build today with this heavy buffer for refined operation and improved shooter comfort.

They are H3 equivalents but from our testing they do not work with forced reset triggers.