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Pistol-length AR-15 and M4 builds have a habit of feeling harsh. The gas system dumps a lot of pressure over a short distance, and that shows up as sharp recoil and a bolt that slams back faster than it needs to. The TacFire Heavy Buffer is a simple, no-drama fix for exactly that. Weighing in at 4.9 oz, it adds meaningful mass to the reciprocating group so the action calms down and your rifle runs a little more like it should.
The body is machined to tight tolerances from black anodized aluminum, with the interior filled with steel to bring the weight up. That combination gives you a durable buffer with a clean finish that resists corrosion and holds up to regular range use. At 3.375 inches long, it drops right into a standard pistol-length buffer tube, and TacFire designed it so it won't beat up the inside of your tube over time.
This buffer is a favorite for over-gassed setups and short-barreled builds, especially in the 7.5 to 10.5 inch range where excess gas is common. Folks running pistol-length 300 Blackout and 5.56 builds reach for extra buffer weight to slow lock time, reduce bolt bounce, and cut down on that jarring feel at the shoulder. If you've paired an adjustable gas block with your setup, this heavier buffer complements it nicely and helps dial in reliable, softer cycling.
Installation is about as easy as it gets. Clear your rifle, pop out your old buffer and spring, and slide this one in its place inside the pistol-length tube. No gunsmithing, no special tools. Just keep in mind that heavier buffers change how your gun cycles, so if you're running lighter loads it's worth confirming your rifle still locks back and functions the way you want before heading out for a serious session.
Yes. At 3.375 inches long, it's built specifically for pistol-length AR-15 and M4 buffer tubes. It's not designed for carbine or rifle-length tubes, so make sure your setup uses a pistol-length tube before ordering.
Short-barreled and over-gassed builds see the biggest improvement, particularly setups in the 7.5 to 10.5 inch range. The extra weight slows the bolt down, reduces felt recoil, and smooths out cycling. It's also a common pick for pistol-length 300 Blackout and 5.56 builds.
It pairs very well with one. If your rifle is over-gassed, combining this heavier buffer with an adjustable gas block lets you fine-tune the amount of gas and buffer weight together for reliable, softer cycling. Many builders use both to get their gun running exactly how they like.
Not at all. Once your rifle is clear, you just remove the old buffer and spring and drop this one in. No tools or gunsmithing required. Because it changes how the gun cycles, it's smart to function-check with your chosen ammo afterward.
| UPC | 811261021969 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | MAR044 |
| Shipping Weight | 0.315 |
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