Browning M2HB Buffer Assembly

M2HB Buffer Assembly

This is a buffer assembly for the Browning M2HB, the heavy-barrel version of the .50 BMG machine gun. The buffer sits at the rear of the receiver and takes the rearward force of the moving parts each time the gun cycles, which keeps the action from slamming metal on metal. United Defense builds it as a complete unit for armorers, collectors and owners who are keeping an M2HB in working order or need a spare on the bench.

Features

• Made For The M2HB — The end face is stamped "H B" to identify it as a heavy-barrel part, so it is easy to tell apart from parts for other M2 variants.
• Complete Assembly — The cylindrical body, rod and head come together as one unit rather than as loose components.
• Machined Cylindrical Body — The main housing is a solid machined cylinder that holds the buffering components.
• Flat-Sided End Profile — Two machined flats on the end face shape how the body seats in the receiver.
• Hex Collar — A hex-shaped collar sits where the rod meets the body.
• Slotted Rod Head — The rod ends in a slotted, cross-pinned head that engages the mating parts in the gun.
• Dark Finish — The body and rod carry a dark finish over the machined metal, matching the look of other M2 hardware.
• Built By United Defense — It is a commercially manufactured part from United Defense, not a surplus pull.

Fit and Construction

The assembly follows the layout of the M2HB buffer: a wide cylindrical body with a hex collar, a long rod running out of it, and a slotted head at the far end. The "H B" marking on the end confirms the heavy-barrel pattern. Check it against your existing buffer or your gun's technical manual before fitting, because M2 variants are not all built the same way.