$179.95
19 in stock
Online inventory may differ from in-store availability.
Quick turnaround so you get your gear sooner.
Trusted checkout with industry-standard protection.
Keeping Traditions Alive Since 1953
Secure Transactions provided with 
Running a suppressor on your AR-15 and dealing with a violent, gassy cycle? The PWS Enhanced Steel Body Carbine Buffer in the H4 weight is built to fix exactly that. At 6.8 ounces, it's the heaviest buffer Primary Weapons Systems offers, and that extra mass slows your bolt carrier down so your rifle runs softer, extracts cleaner, and stops beating itself up shot after shot. It drops right into any standard carbine-length buffer tube with no modifications, so swapping it in takes about a minute.
Most of the weight game plays out with lead or tungsten weights inside an aluminum body. PWS went a different route here with a full steel body machined from 4140 steel. The standout feature is the fluted design, which rides on minimal contact points inside the tube. That means less friction, smoother travel, and channels that let carbon and grit clear out instead of packing up and gumming your action. On top of that, the FNC LIFE HD salt bath nitride treatment chemically bonds lubrication into the surface, so cycling stays slick and the finish shrugs off corrosion over the long haul.
When you thread a can onto your rifle, backpressure spikes and the bolt slams back faster and harder than it was ever tuned for. That shows up as brass flying forward, extra bolt bounce, and a lot more grit blowing back in your face. The H4's added mass counters all of that by increasing dwell time and reining in bolt velocity, which flattens the recoil impulse and helps your groups stay tight during longer strings. It's a favorite among folks running short barrels with suppressors or any setup that's just plain too aggressive with a standard buffer.
Worth knowing: the H4 is a genuinely heavy buffer meant for gassy guns. If your rifle isn't suppressed or over-gassed, a lighter H or H2 may cycle better. But for the builds it's made for, this is one of the few standard-sized steel-body H4 options out there, and it's backed by the PWS lifetime warranty.
Yes. It's a direct drop-in for any AR-15 using a Mil-Spec or commercial carbine-length receiver extension, no modifications needed. It also fits 8-inch GI-spec AR-10/AR-308 receiver extensions. Just make sure you're running a carbine tube and not a rifle-length or A5 setup.
Probably not. At 6.8 ounces the H4 is PWS's heaviest buffer and it's really meant for suppressed or heavily over-gassed rifles. If your gun isn't suppressed, a lighter H or H2 buffer will usually cycle more reliably. Watch your brass ejection pattern to gauge what your rifle actually needs.
Instead of an aluminum body with weights inside, the H4 uses a solid 4140 steel body machined with flutes that ride on minimal contact points. That design lets debris clear out so it keeps running when it's dirty. The salt bath nitride finish also bonds lube into the surface for smoother, slicker cycling.
That's exactly what it's built for. The heavier mass slows bolt carrier velocity, which cuts down on felt recoil and bolt bounce while increasing dwell time for cleaner extraction. The result is a flatter, more controlled cycle, especially when you're dealing with the extra backpressure of a can.
| UPC | 811154033703 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | EBUFFER-H4 |
You must be logged in to post a review.
Reviews
There are no reviews yet.