Pro2A 14.5" 9mm Pistol Caliber Melonite M-LOK AR-9 Upper Receiver

PRO2A 14.5" 9mm 1/10 Pistol Caliber Melonite M-LOK Upper

Description

The Pro2A Tactical 14.5-inch 9mm Pistol Caliber Complete Upper Receiver assembly brings rugged reliability and cost-efficient training ballistics to the AR platform. Carefully hand-assembled and quality verified in Georgia, this upper receiver operates on a standard, hyper-reliable straight blowback system. Featuring a highly maneuverable 14.5-inch barrel with a rugged Melonite treatment and a rigid free-float M-LOK rail layout, it serves as an excellent drop-in option for standard AR-9 builds, dedicated pistol lower configurations, or registered short-barreled rifle receivers.

Key Features

Pistol Caliber Maneuverability: Employs a tight 14.5-inch barrel profile ideal for close-quarters training, home defense, and low-recoil steel target matches.
Reliable Straight Blowback Action: Built without gas blocks or complex gas tube routing, eliminating standard mechanical failure points to ensure dependable cycling with a wide variety of 9mm loads.
1/10 Standard Twist: Precision-stabilizes standard 115gr, 124gr, and heavy sub-sonic 147gr 9mm bullets comfortably for competitive target groupings.
Slim M-LOK Modular Rail: Employs a lightweight free-float handguard for easy integration of flashlights, laser aiming systems, and tactical foregrips.

Technical Specifications

Upper Receiver	Milspec Billet Aluminum M4 Flat Top Receiver, Ejection Port Optimized for Pistol Calibers, Enhanced Feed Cone (Type III Hardcoat Anodized)
Barrel Length & Profile	14.5-Inch Medium Profile
Caliber	9mm Luger (9x19mm)
Twist Rate	1:10 Twist
Barrel Material	4150 Chrome Moly Vanadium Steel with Premium Corrosion-Resistant Melonite Finish
Gas System Length	Not Needed - Straight Blowback Operation
Handguard	12 Inch Free Float Slim Profile M-LOK Rail System with Integrated Top Picatinny Rail
Muzzle Thread & Device	1/2x28 Thread Pitch with Standard A2 Flash Hider

Why Choose This Product?

Transitioning into a pistol caliber platform requires precise chamber and extraction geometric design due to the increased pressures of straight blowback cycling. The Pro2A 14.5" 9mm Upper Receiver addresses this entirely by utilizing an optimized feed ramp contour matched alongside premium 4150 steel manufacturing tolerances. The resilient Melonite surface treatment guarantees maximum bore life, exceptional surface hardness, and worry-free cleanings after using dirty training ammunition. Safe, ultra-flat shooting, and built to withstand rigorous use, it is the perfect drop-in conversion to round out any versatile weapon storage collection.