AeroPrecision121688555
Aero Precision APAR501603AC Assembled Receiver Multi-Caliber 7075-T6 Aluminum Black Anodized Receiver for AR-15$124.99
Availability: In Stock
Current Stock: Out of stock
The Aero Precision EPC-9 upper receiver is built for shooters ready to dial in a reliable 9mm Luger AR-platform pistol caliber carbine. This threaded upper delivers the precision and durability Aero is known for, machined from 7075-T6 aluminum and finished in hard-coat black anodize. It's a purpose-built receiver that takes the guesswork out of your PCC (pistol caliber carbine) build and works with the magazines and platform you likely already have.
What sets the EPC-9 apart is its last round bolt hold open (LRHBO) mechanism—a feature that makes running high-round-count drills or competitive matches more intuitive. When you burn through a magazine, the bolt locks back, just like you'd expect from a centerfire gun. That responsiveness makes a real difference in how the gun handles, whether you're training, running matches, or simply enjoying the range.
The receiver accepts standard AR15 barrel nuts and handguards, so you're not locked into a proprietary ecosystem. A dimple above the threads ensures proper handguard timing, and the standard AR15 takedown and pivot pin lug pattern means no learning curve if you've built an AR before. The threaded design gives you flexibility for suppressor-ready configurations or other muzzle devices. Laser-engraved T-marks help with component alignment during assembly.
This is an upper receiver only—plan your build around quality barrels, bolt carrier groups, and triggers to complete the platform. Aero's attention to forging and finish means your EPC-9 will track straight and handle thousands of rounds without premature wear.
| Product | EPC-9 Upper Receiver |
| Caliber | 9mm Luger |
| Platform | AR-Platform |
| Material | 7075-T6 Aluminum (Custom Forged) |
| Finish | Hard-Coat Black Anodize |
| Barrel Thread Profile | Threaded |
| Special Features | Last Round Bolt Hold Open (LRHBO) Mechanism |
| Handguard Compatibility | Standard AR15 Barrel Nut & Handguards |
| Pin Lug Pattern | Standard AR15 Takedown/Pivot Pin Lug |
| What's Included | Upper Receiver with Pre-Installed LRHBO Assembly |
The LRHBO mechanism is compatible with Glock pattern magazines. Make sure your magazine selection matches this requirement if you want the bolt-hold-open function to operate properly.
Yes. The EPC-9 accepts standard AR15 barrel nuts and handguards. A dimple above the threads aids in proper handguard timing during assembly.
The upper receiver comes with the LRHBO assembly pre-installed. You'll need to source a bolt carrier group, barrel, charging handle, and other internal components to complete the build.
Yes, the EPC-9 features a threaded design, making it ready for a suppressor or other compatible muzzle device.
SKU: 121688840 • Width: 6in • Height: 2.5in • Depth: 10in • Weight: 0.8oz
Availability: In Stock
Current Stock: Out of stock
The Aero Precision EPC-9 upper receiver is built for shooters ready to dial in a reliable 9mm Luger AR-platform pistol caliber carbine. This threaded upper delivers the precision and durability Aero is known for, machined from 7075-T6 aluminum and finished in hard-coat black anodize. It's a purpose-built receiver that takes the guesswork out of your PCC (pistol caliber carbine) build and works with the magazines and platform you likely already have.
What sets the EPC-9 apart is its last round bolt hold open (LRHBO) mechanism—a feature that makes running high-round-count drills or competitive matches more intuitive. When you burn through a magazine, the bolt locks back, just like you'd expect from a centerfire gun. That responsiveness makes a real difference in how the gun handles, whether you're training, running matches, or simply enjoying the range.
The receiver accepts standard AR15 barrel nuts and handguards, so you're not locked into a proprietary ecosystem. A dimple above the threads ensures proper handguard timing, and the standard AR15 takedown and pivot pin lug pattern means no learning curve if you've built an AR before. The threaded design gives you flexibility for suppressor-ready configurations or other muzzle devices. Laser-engraved T-marks help with component alignment during assembly.
This is an upper receiver only—plan your build around quality barrels, bolt carrier groups, and triggers to complete the platform. Aero's attention to forging and finish means your EPC-9 will track straight and handle thousands of rounds without premature wear.
| Product | EPC-9 Upper Receiver |
| Caliber | 9mm Luger |
| Platform | AR-Platform |
| Material | 7075-T6 Aluminum (Custom Forged) |
| Finish | Hard-Coat Black Anodize |
| Barrel Thread Profile | Threaded |
| Special Features | Last Round Bolt Hold Open (LRHBO) Mechanism |
| Handguard Compatibility | Standard AR15 Barrel Nut & Handguards |
| Pin Lug Pattern | Standard AR15 Takedown/Pivot Pin Lug |
| What's Included | Upper Receiver with Pre-Installed LRHBO Assembly |
The LRHBO mechanism is compatible with Glock pattern magazines. Make sure your magazine selection matches this requirement if you want the bolt-hold-open function to operate properly.
Yes. The EPC-9 accepts standard AR15 barrel nuts and handguards. A dimple above the threads aids in proper handguard timing during assembly.
The upper receiver comes with the LRHBO assembly pre-installed. You'll need to source a bolt carrier group, barrel, charging handle, and other internal components to complete the build.
Yes, the EPC-9 features a threaded design, making it ready for a suppressor or other compatible muzzle device.
SKU: 121688840 • Width: 6in • Height: 2.5in • Depth: 10in • Weight: 0.8oz