PRO2A 7.5" 350 Legend 1/16 Pistol Length Melonite M-LOK AR-15 Upper Kit

Product Description

Maximize close-range maneuverability, portability, and straight-wall power with the complete PRO2A 7.5" 350 Legend Pistol-Length Melonite M-LOK AR-15 Upper Kit. Purpose-built to offer a highly compact hunting or personal defense footprint, this master build package features a meticulously headspaced 7.5-inch heavy-duty barrel assembly paired with a reliable pistol-length direct impingement gas system. Engineered as an all-in-one building solution, this kit comes fully populated with a premium M16 profile bolt carrier group, a mil-spec charging handle, a complete lower parts kit (LPK), and an adjustable pistol stabilizing brace assembly—supplying every essential internal component required to finish your stripped lower receiver.

Key Features

All-Inclusive Master Build Kit: Bundles the complete barreled upper receiver with a premium bolt carrier group, charging handle, full lower parts kit, and rear receiver pistol brace assembly.
Ultra-Compact Profile: 7.5-inch heavy target barrel configuration delivers massive close-range kinetic energy transfer from a highly maneuverable, lightweight footprint.
Straight-Wall Compliance: Specifically optimized for the 350 Legend cartridge, making it an excellent compact choice for states or zones with restrictive straight-wall firearm hunting mandates.
QPQ Melonite Extreme Armor: Barrel bore, chamber, and exterior are fully liquid nitrocarburized to exceed mil-spec chrome lining in surface hardness, heat dissipation, and corrosion resistance.
Slim Profile M-LOK Workspace: Features a continuous top Picatinny rail interface seamlessly blended into a 7-inch free-floating M-LOK handguard for rigid optics and accessory mounting stability.

Technical Specifications

Caliber / Chambering	350 Legend (Straight-Walled Cartridge)
Barrel Length / Steel	7.5 Inches / 4150 Chrome Moly Vanadium (CMV) Steel
Barrel Finish & Profile	QPQ Melonite / Black Nitride (Internal & External) — Medium Profile
Twist Rate / Feed Ramps	1:16 Twist / Engineered Single-Large M4 Feed Ramp Profile for Reliable Straight-Wall Case Feeding
Gas System Mechanics	Pistol Length Direct Impingement with a 0.750" Low-Profile Steel Gas Block
Upper Receiver Housing	7075-T6 Forged Aluminum, Mil-Spec M4 Profile, Type III Hardcoat Anodized
Handguard System	6.5-Inch Ultra-Lightweight Free-Float 6061-T6 Aluminum M-LOK Rail
Muzzle Configuration	Standard A2 Flash Hider / 5/8x24 TPI Thread Pitch
Bolt Carrier Group (BCG)	M16 Profile Full-Auto Capable, Case Hardened 8620 Steel Carrier, 9310 Steel Bolt (MPI Tested), Advanced Nitride Finish
Charging Handle	Standard Mil-Spec AR-15 Charging Handle
Lower Parts Kit (LPK)	Complete AR-15 Lower Parts Kit (Standard Milspec ELG Trigger / Fire Control Group, Pistol Grip, Detents, Springs, Pins, and Safety Selector)
Brace & Buffer Assembly	Premium Adjustable Pistol Stabilizing Brace, Pistol Receiver Extension Tube, Carbine Recoil 3oz Buffer, and High-Tensile Buffer Spring
Manufacturing Origin	100% Designed, Machined, and Assembled in the United States
Warranty Protection	Backed by Pro2A Tactical's Structural Lifetime Warranty

Why Choose This Product?

The PRO2A 7.5" 350 Legend Pistol Length Build Kit removes the complexity of sourcing structural precision components across separate vendors by providing a perfectly headspaced and balanced ecosystem right out of the box. Sourcing standalone components often creates headspacing risks or feeding failures with straight-walled cases. This system resolves that constraint entirely, utilizing a specialized single large M4 feed ramp configuration built explicitly to chamber straight-wall ammunition smoothly. Completely paired with an advanced M16 Nitride bolt group, lower frame parts, and complete stabilizing brace hardware, this system ensures total hardware harmony under the protection of a full Structural Lifetime Warranty.

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