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Muzzle rise is the enemy of a fast second shot, and the GrovTec G-Comp is built to tame it. This 9mm compensator uses precision porting to redirect propellant gases and push back against recoil impulse, so your dot or sights settle faster between rounds. Whether you're running a pistol-caliber carbine on the clock or just want a flatter-shooting range gun, that little bit of extra control adds up fast.
This one is machined from steel and wears a black nitride finish, which is the same treatment you'll find on a lot of quality bolts and small parts. Nitride shrugs off corrosion, holds up to heat, and keeps a clean matte-black look that blends in with just about any build. It's a compact device too, so you get real gas management without hanging a bunch of extra length or weight off your muzzle.
The G-Comp uses a 1/2×28 thread pitch, which is the most common pattern on 9mm threaded barrels. One important note that trips people up: 1/2×28 is also used on .223 and 5.56 rifles, but this comp is bored for 9mm and should only go on a 9mm barrel. Make sure your barrel is actually chambered in 9mm before you thread it on.
A crush washer comes in the box, so you've got what you need to time it and lock it down at the right clock position. Slide the washer on, thread the comp hand-tight, then snug it with a wrench until the ports point where you want them, usually straight up. Go easy on the torque since 9mm barrel walls can be thin under the threads, and a dab of anti-seize on the threads never hurts. Crush washers are meant for one-time use, so grab a spare if you plan to swap things around later.
No, and this is the big one to get right. While 1/2×28 threading is shared between 9mm and .223/5.56 barrels, the G-Comp is bored specifically for 9mm and should only be installed on a 9mm barrel. Running a 9mm-bored device on a rifle-caliber barrel is a fitment mismatch you want to avoid.
GrovTec includes a crush washer in the box, so you have what you need to time and secure it. All you really need on top of that is a wrench to snug it down. If you tend to swap muzzle devices often, it's smart to keep a spare crush washer on hand since they're a one-time-use item.
Slide the crush washer onto the barrel, thread the comp on hand-tight, then tighten with a wrench until the ports line up where you want them, typically straight up. Don't crank on it too hard since 9mm barrel walls can be thin under the threads. A little anti-seize on the threads makes future removal easier.
Yes, the G-Comp vents gas upward to help keep the muzzle flat and counter recoil impulse, which makes follow-up shots quicker and easier to track. On pistol-caliber carbines a good chunk of felt recoil comes from the reciprocating mass, so an aggressive comp is where you'll notice the flat-shooting difference most. It's a popular upgrade for competition, range use, and performance-focused builds.
| UPC | 850001279017 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | GTHM351 |
| Caliber/Gauge | 9mm |
| Color | Black |
| Model | |
| Product Type | Compensator |
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