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 steel weights for maximum mass in a standard 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 steel 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.