The PWS Enhanced Steel Body Buffer in the Carbine H4 weight (brand part no. EBUFFERH4) is the heaviest buffer that Primary Weapons Systems offers, and the maker intends it for suppressed use. Suppressors push more gas back into the action, so a heavier buffer slows the carrier and calms the cycle. The H4 weighs 6.8 ounces and uses PWS’s MOD 2 4140 steel body, a fluted design with a minimum of contact points so debris can clear. It is a drop-in way to tune a carbine that runs suppressed, without changing anything else in the buffer system.

Key Specifications

• The buffer is the H4 weight at 6.8 ounces, the heaviest buffer in the PWS lineup.
• The length class is carbine, the buffer designation PWS lists for this model.
• The body is MOD 2 4140 steel, a strong alloy that carries the extra weight in one piece.
• The body has a fluted design with minimum contact points, which lets debris clear instead of binding in the tube.
• PWS applies its FNC LIFE HD treatment, which chemically bonds in lubrication for smoother cycling.
• The maker intends the H4 for suppressed use, where the added gas calls for the heaviest buffer.

Frequently Asked Questions

Who is the H4 buffer for? PWS says the H4 is its heaviest buffer and is intended for suppressed use.

What is the FNC LIFE HD treatment? It is PWS’s treatment that chemically bonds lubrication into the buffer body for smoother cycling.

How much does the H4 weigh? The H4 carbine buffer weighs 6.8 ounces.

Buy the PWS Enhanced Steel Body Buffer, Carbine H4, 6.8 oz

If your carbine runs a suppressor and feels over-gassed, the buffer is the first and cheapest thing to change, and the H4 is the heaviest option PWS makes. Order it from our Lubbock, Texas gun shop for fast, insured shipping, and see more AR buffer system parts.