PRO2A 7.5" 5.56/223 Pistol Length Melonite Upper | Pro2A Tactical

PRO2A 7.5" 223/5.56 1/7 Pistol Length Melonite M-LOK AR-15 Upper

Sub-Compact Firepower and Rigid Maneuverability for PDW Platforms

Deploy maximum force from an incredibly tight footprint. The PRO2A 7.5" 223/5.56 Pistol Length Melonite M-LOK AR-15 Upper delivers an ultra-compact upper receiver assembly optimized for close-quarters applications, vehicular transport, and high-speed target tracking. Built around an ultra-rigid 7.5-inch 4150 CMV steel barrel, this system is engineered to absorb intense short-barrel pressures while maintaining exceptional point-of-aim consistency. The barrel's versatile 5.56 chambering handles both military-spec 5.56x45mm ammo and commercial .223 Remington loads interchangeably, safely firing from a tuned pistol-length direct impingement operating matrix. Natively drops onto any standard Mil-Spec AR-15 lower receiver configured as a registered short-barreled rifle (SBR) or personal defense weapon (PDW) pistol. Proudly 100% designed, machined, and precision-assembled in the USA.

Key Features

Ultra-Compact 7.5-Inch Profile: Yields a minimal overall length footprint perfect for home defense configurations and specialized close-quarters operational spaces.
Melonite/Nitride Bore Protection: The heavy-duty 4150 CMV steel barrel undergoes a premium Salt Bath Melonite process inside and out. This high-grade treatment vastly increases surface slickness, slows rapid gas port erosion, and defies harsh environmental moisture.
Dual Caliber 5.56/.223 Flexibility: Built with a true 5.56 NATO chamber to safely cycle high-pressure military surplus ammunition as well as standard commercial .223 Remington cartridges without extraction lag.
Aggressive 1:7 Twist Rate: Button-rifled with a fast 1:7 twist configuration engineered to stabilize a vast profile array of tactical projectiles, establishing excellent downrange mechanical consistency.
Slim Profile Free-Float M-LOK Handguard: Crafted from aircraft-grade 6061-T6 aluminum, the free-float rail isolates barrel vibrations to preserve uniform mechanical accuracy while providing extensive modular M-LOK attachment surfaces and a top Picatinny rail.

Technical Specifications

Upper Receiver	Mil-Spec Forged 7075-T6 Aluminum, M4 Feed Ramps, Type III Hardcoat Anodized Black Finish (Forward Assist & Ejection Port Cover Pre-Installed)
Barrel Length & Steel	7.5 Inch Profile, 4150 Chrome Moly Vanadium Steel, Medium Contour, Melonite Treated
Caliber	5.56 NATO (Fully compatible with .223 Remington ammunition)
Twist Rate	1:7 Twist (Optimized to stabilize standard and heavy duty 62gr, 69gr, and 77gr loads)
Gas Operating Block	Pistol-Length System, Low-Profile Gas Block Machined from 4140 Steel, Stainless Steel Gas Tube
Muzzle Device	Standard 1/2-28 Thread Pitch, A2 Birdcage Flash Hider with Crush Washer
Handguard	7 Inch Competition Top Slim Profile Free-Float M-LOK Rail, Machined from 6061-T6 Aluminum
Manufacturing Origin	100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty

Why Choose This Product?

The PRO2A 7.5" 223/5.56 Pistol Length Upper Assembly is the ultimate solution for shooters looking to build a nimble, reliable, and space-saving personal defense platform. While building standard-length rifles offers traditional ergonomics, a dedicated 7.5-inch compact upper allows you to scale down your firearm to clear corners effortlessly and maneuver seamlessly in close-quarters settings where a full-length barrel becomes a severe spatial liability.

Pro2A Tactical ensures complete operational confidence by tracking strict tolerances across all internal dimensions. By utilizing a high-grade Melonite-hardened barrel paired with a forged 7075-T6 aluminum upper receiver, this sub-compact configuration manages thermal changes cleanly and mitigates port erosion under rapid firing streams. Backed entirely by Pro2A Tactical's signature Lifetime Factory Warranty and machined with 100% American craftsmanship, this upper provides premium field dependability at an unmatched value point.

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