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Advanced Armament Corp didn't stumble into the suppressed-shooting world. They helped build it, and the .300 AAC Blackout cartridge was their answer to getting serious performance out of a short barrel with a can hanging off the end. The MPW pistol is the platform that puts all of that thinking into one package. This is the 9-inch version chambered in .300 Blackout, set up with an AR-pattern lower, a 30-round magazine, and a Magpul MOE BSL brace so you can shoulder it comfortably and keep rounds on target.
The heart of this build is a short 9-inch barrel with a 1:7 twist, which is the sweet spot for stabilizing the heavier subsonic loads that .300 BLK is known for while still shooting supersonic ammo well. The barrel wears an FNC coating for corrosion resistance and sits behind a pinned gas block, which means the gas system is dialed in and locked down rather than left adjustable or loose. Up front you get the AAC Blackout flash hider, which doubles as a mount for AAC's suppressor ecosystem if you decide to go quiet down the road.
This MPW pistol uses a full-chrome bolt carrier group with a Chrome Carpenter 158 bolt, so the internals hold up to heat and wipe down easily after a range session. The two-stage trigger gives you a predictable break that makes a real difference on this short platform, and the ambidextrous safety works no matter which hand you run. The 8-inch AAC ARX free-float handguard keeps your hand off the barrel and gives you plenty of room for a light, grip, or whatever else you like to hang on there.
Everything about the MPW points toward one thing: being a great host for a .300 Blackout suppressor setup. The cartridge was designed to cycle reliably in a short barrel and run quiet with subsonics, and this pistol was built around that exact use case. Whether you keep it short for truck-gun duty, home defense, or just plinking at the range, the MPW is a platform that does the compact 300 BLK job the way it was meant to be done.
Yes, this MPW ships with a Magpul MOE BSL pistol brace installed. It gives you a stable point of contact to shoulder the pistol and helps keep the short 9-inch platform steady when you're shooting. It's a solid, no-nonsense brace that pairs well with the compact build.
The MPW comes with the AAC Blackout flash hider, which works as a mounting adapter for AAC's suppressor ecosystem. The 9-inch barrel and .300 Blackout chambering were designed with suppressed and subsonic shooting in mind, so this is a natural host if you plan to run a can. You would need to add the suppressor itself separately.
This MPW has a 1:7 twist barrel, which is the go-to rate for .300 Blackout. It stabilizes the heavy subsonic bullets the cartridge is famous for while still shooting supersonic loads accurately. That versatility is a big part of what makes 300 BLK and the MPW a good match.
No, the MPW ships without sights or an optic, so you'll want to add your own setup. The flat-top upper gives you a full-length rail for mounting a red dot, iron sights, or whatever you prefer. This lets you build it out the way you shoot.
| UPC | 810141223035 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | AR-102111 |
| Action | |
| Barrel Length | 9" |
| Caliber/Gauge | .300 AAC Blackout |
| Capacity | 30 |
| Color | Black |
| Model | |
| Number of Magazines | 1 30 rd. |
| Product Type | AR |
| Safety | Thumb Safety |
| Sights | No Sights |
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