PRO2A 7.5" 45 ACP 1/16 Pistol Caliber NR Side Charging Melonite M-LOK Upper
Product Overview
Upgrade your pistol caliber carbine with the PRO2A 7.5" 45 ACP Non-Reciprocating (NR) Side Charging Melonite M-LOK Upper. Engineered for premium reliability and rapid manual cycling, this fully assembled complete upper receiver group brings hard-hitting big-bore pistol performance to the AR platform. Featuring a high-end Gibbz Arms Billet Upper Receiver and a rugged Melonite-treated barrel, this package offers optimized ergonomics, superior optics clearance, and exceptional close-quarters maneuverability. It drops straight onto your .45 ACP AR-15 lower receiver setup.
Key Features
- Non-Reciprocating Side Charging: Genuine Gibbz Arms charging handle stays stationary while firing, preventing optical mounting interference and enhancing operational leverage.
- Premium Melonite / Nitride Treated Barrel: Crafted from heavy-duty 4150 CMV steel and finished inside and out with a liquid QPQ Nitride/Melonite layer for maximum corrosion and wear resistance.
- Optimized 1:16 Twist Rate: Precision button rifling calculated to perfectly stabilize common 230gr standard ammunition and heavy subsonic .45 ACP loads.
- Free-Float M-LOK Handguard: The slim 7-inch handguard provides a continuous top Picatinny rail and ample modular space for accessories like lights, lasers, and hand stops.
- Operational Quality: Ships fully assembled, headspaced, and factory test-fired.
- 100% Made in the USA: Proudly manufactured, assembled, and quality-tested in the United States, backed by a comprehensive lifetime warranty.
Technical Specifications
| Caliber / Chamber | .45 ACP |
|---|---|
| Barrel Length | 7.5 Inches |
| Barrel Material | 4150 Chrome Moly Vanadium (CMV) Steel |
| Twist Rate | 1:16 Twist Button Rifled |
| Barrel Finish | Melonite / QPQ Nitride Finish |
| Gas System Length | Blowback System (No Gas Block Needed) |
| Upper Receiver | Gibbz Arms G9 Non-Reciprocating Side Charging Billet Aluminum, Gen 2 Handle, Type III Hardcoat Anodized |
| Handguard | 7" Premium Slim Free-Float M-LOK Handguard (6061-T6 Aluminum) |
| Muzzle Thread & Device | 5/8x24 TPI; Standard A2 Big Bore Flash Hider |
| Manufacturing Origin | 100% Made in the USA |
Why Choose the PRO2A 7.5" .45 ACP Side Charging Upper?
Building a reliable .45 ACP AR pistol requires strict component compatibility to handle heavy blowback operations. Pro2A Tactical eliminates the guesswork by providing a perfectly headspaced and range-tested complete upper. Moving the manual operation forward to a non-reciprocating side handle vastly improves tactical ergonomics, allowing you to charge the weapon fluidly without shifting your cheek weld or clearing oversized scopes. By matching high-end premium billet components with a hard-hitting, short-barreled velocity profile, this upper receiver delivers defense-grade execution and tournament-level accuracy in an accessible modular layout.
