Heavy Duty H2 4.6oz Steel Buffer With Reciprocating Internal Weight

Heavy Duty All-Steel Construction for Hard-Use AR-15 Platforms

Standard AR-15 buffers rely on lightweight aluminum bodies that can mar, deform, or crack under high-volume fire or extreme gas pressures. The Mid State Firearms Heavy Duty 4.6oz Steel H2 Buffer eliminates this weak point entirely. By replacing the standard aluminum shell with heavy-duty steel construction, we’ve distributed the reciprocating mass across the entire length of the buffer body for smoother cycling and maximum structural longevity. This uses a floating internal weight (not a solid body buffer, it still ‘rattles’ when you shake it).

Designed for Suppressed & Over-Gassed Carbines

If your M4 carbine or AR-15 build is ejecting brass violently forward (1 o’clock to 2 o’clock position) or experiencing harsh felt recoil, it is likely over-gassed. At a perfectly calibrated 4.6 ounces, this H2-weight buffer delays bolt unlock time just enough to let chamber pressures drop. The result is reduced parts wear, cleaner operation, and a noticeably flatter recoil impulse—especially when running a suppressor.

Active Reciprocating Weight Prevents Bolt Bounce

Don’t confuse this with a cheap, static deadweight. This buffer features a precision-machined, solid internal weight that moves freely inside the steel body. This reciprocating action creates a crucial “dead-blow” effect. When your bolt carrier group slams into battery, the internal weight lags split-seconds behind, striking the front face to dampen energy and completely eliminate catastrophic bolt bounce during rapid strings of fire.

Technical Specifications & Compatibility

• Total Weight: 4.6 oz (Standard H2 Weight Class)
• Body Material: Heavy-Duty Hardened Steel
• Internal Weight: Solid Reciprocating Steel Slug
• Total Length: 3.28″ (Standard Carbine Length)
• Compatibility: Fits AR-15, M4 Carbine, and standard AR platform builds utilizing a standard mil spec carbine receiver extension (buffer tube).

Why Choose an All-Steel H2 Buffer?

Traditional H2 buffers use expensive tungsten pucks inside an aluminum shell to reach 4.6 ounces. By shifting to a heavy-duty steel body and steel weight configuration, we deliver the exact same physical mass and physics-backed performance, but inside a bombproof, wear-resistant chassis that outlasts standard aluminum alternatives under duty conditions.