POF USA121688444
POF UPPER COMPLETE WONDER 13.75 300 BLUE$1,206.00
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Availability: In Stock
The POF Minuteman 13.75" complete upper receiver in .300 Blackout delivers a versatile, ready-to-mount solution for shooters building short-range or suppressed AR platforms. Patriot Ordnance Factory built this upper with field-proven components and their proprietary engineering—including a mil-spec enhanced bolt carrier and patented roller cam pin—so you get a cohesive, tested system rather than a stack of individual parts.
.300 Blackout remains one of the most practical cartridges for subsonic loads, short-barrel rifles, and suppressed setups. The 13.75-inch Nitride barrel on this upper is pistol-length, meaning it pairs well with short receiver extensions and compact builds, while the pinned Dead Air Keymo muzzle brake provides a clean mounting interface for suppressors. The low-profile gas block keeps the sight line low and doesn't interfere with optic mounting or hand placement on the rail.
The 13-inch M-LOK compatible Renegade rail gives you plenty of real estate for lights, lasers, grips, and accessories without excess length or weight. This upper arrives fully assembled and headspaced—no gunsmithing required. Pair it with a compatible lower receiver, and you have a short, handy rifle or pistol platform suitable for home defense, tactical training, or suppressed hunting.
| Caliber | .300 Blackout |
| Barrel Length | 13.75 inches |
| Barrel Profile | Pistol length |
| Barrel Finish | Nitride |
| Bolt Carrier | Mil-spec enhanced |
| Cam Pin | POF patented roller cam pin |
| Muzzle Device | Dead Air Keymo (pinned) |
| Gas Block | Low-profile |
| Handguard / Rail | 13-inch Renegade (M-LOK compatible) |
| Configuration | Complete upper receiver assembly |
This is a standard AR-15 format upper receiver. It will mate with any AR-15 lower receiver that accepts a mil-spec upper. Confirm that your lower is chambered or configured to handle the upper you select.
Yes. The .300 Blackout cartridge is purpose-built for both supersonic and subsonic loads, and this 13.75-inch barrel supports both. Subsonic rounds are particularly effective when paired with a suppressor, which this upper's Keymo mount is designed to accommodate.
The Dead Air Keymo brake is pinned to the barrel. For details on removal or maintenance, contact POF or a qualified gunsmith.
This is a complete upper receiver assembly with bolt carrier group and charging handle installed and headspaced. It arrives ready to function once mounted to a compatible lower receiver.
SKU: 121686542 • Weight: 6oz
Availability: In Stock
The POF Minuteman 13.75" complete upper receiver in .300 Blackout delivers a versatile, ready-to-mount solution for shooters building short-range or suppressed AR platforms. Patriot Ordnance Factory built this upper with field-proven components and their proprietary engineering—including a mil-spec enhanced bolt carrier and patented roller cam pin—so you get a cohesive, tested system rather than a stack of individual parts.
.300 Blackout remains one of the most practical cartridges for subsonic loads, short-barrel rifles, and suppressed setups. The 13.75-inch Nitride barrel on this upper is pistol-length, meaning it pairs well with short receiver extensions and compact builds, while the pinned Dead Air Keymo muzzle brake provides a clean mounting interface for suppressors. The low-profile gas block keeps the sight line low and doesn't interfere with optic mounting or hand placement on the rail.
The 13-inch M-LOK compatible Renegade rail gives you plenty of real estate for lights, lasers, grips, and accessories without excess length or weight. This upper arrives fully assembled and headspaced—no gunsmithing required. Pair it with a compatible lower receiver, and you have a short, handy rifle or pistol platform suitable for home defense, tactical training, or suppressed hunting.
| Caliber | .300 Blackout |
| Barrel Length | 13.75 inches |
| Barrel Profile | Pistol length |
| Barrel Finish | Nitride |
| Bolt Carrier | Mil-spec enhanced |
| Cam Pin | POF patented roller cam pin |
| Muzzle Device | Dead Air Keymo (pinned) |
| Gas Block | Low-profile |
| Handguard / Rail | 13-inch Renegade (M-LOK compatible) |
| Configuration | Complete upper receiver assembly |
This is a standard AR-15 format upper receiver. It will mate with any AR-15 lower receiver that accepts a mil-spec upper. Confirm that your lower is chambered or configured to handle the upper you select.
Yes. The .300 Blackout cartridge is purpose-built for both supersonic and subsonic loads, and this 13.75-inch barrel supports both. Subsonic rounds are particularly effective when paired with a suppressor, which this upper's Keymo mount is designed to accommodate.
The Dead Air Keymo brake is pinned to the barrel. For details on removal or maintenance, contact POF or a qualified gunsmith.
This is a complete upper receiver assembly with bolt carrier group and charging handle installed and headspaced. It arrives ready to function once mounted to a compatible lower receiver.
SKU: 121686542 • Weight: 6oz