Engineered to deliver heavy-hitting straight-wall cartridge performance in a compact footprint, the PRO2A 10.5" 350 Legend Non-Reciprocating (NR) Side Charging Upper Kit is the ultimate solution for brush hunting, tactical pistol builds, and regulated deer hunting zones. Built around a premium billet aluminum left-side charging receiver, this kit enables effortless action cycling and clearing without losing your cheek weld or target picture. It arrives as a complete assembly, headspaced and test-fired to ensure out-of-the-box reliability when pinned to any standard mil-spec AR-15 lower receiver platform.

Technical Product Specifications:

• Caliber: .350 Legend (Straight-Wall Compliant)
• Upper Receiver Style: Gibbz Arms G4 Non-Reciprocating (NR) Left-Side Charging, Billet Aluminum, Anodized Black (Handle remains stationary while firing)
• Barrel Length: 10.5 Inches
• Gas System: Pistol-Length (Direct Impingement, optimized for reliable cycling with modern straight-wall loads)
• Barrel Twist Rate: 1:16 Twist (precision engineered for optimal stabilization of popular .350 hunt weights)
• Barrel Material & Finish: 4150 Chrome Moly Vanadium Steel treated with a slick Melonite / Nitride QPQ protective finish
• Bolt Carrier Group: Milspec M16 Full Auto Profile, 9310 Steel Bolt, 8620 Steek Carrier, NItride Finish, Properly Staked Gas Key, MPI Tested
• Handguard: 12 Inch Free-Float M-LOK rail providing continuous top Picatinny estate and modular accessory mounting slots
• Muzzle Device: 5/8-24 Slimline Flash Can (redirects noise, unburnt powder, and concussive forces directly downrange)
• Lower Parts Kit (LPK): Complete Mil-Spec assembly including trigger, hammer, safety selector, springs, pins, and A2 pistol grip
• Pistol Blade Assembly: High-strength impact-resistant polymer pistol stabilizing blade, dimpled pistol buffer tube, spring, carbine buffer weight, castle nut, and receiver endplate
• Platform Compatibility: Standard AR-15 mil-spec lower receivers
• Manufacturing: 100% Made in the USA

Key Product Features:

• Non-Reciprocating Left-Side Handle: Charging controls stay securely locked forward when the rifle cycles, avoiding interference with support hand placement, optical mounts, or barricades.
• Straight-Wall Feed Optimization: Specifically tailored and hand-polished internal feed ramp architecture to ensure flawless single-stack feeding of blunt-nosed .350 Legend hunting projectiles.
• Linear Concussion Redirection: Tipped with a forward-blast flash can that drives heavy expansion muzzle gases straight down the line of fire, minimizing operator fatigue.
• Rigid Receiver Uniformity: Meticulously assembled by hand with professional headspace checks, gas block alignment verification, and tight barrel extension fitment for tight accuracy clusters.

Why Choose the Pro2A Tactical 10.5" 350 Legend NR Side Charging Upper Kit?

Superior Left-Side Mechanical Leverage

Manipulating standard rear charging handles under heavy target optics or close to the face can be slow and clumsy in field environments. Our left-side **Non-Reciprocating Side Charging system** places weapon control right where your support hand naturally rests, allowing you to charge the weapon system or clear a rare straight-wall feeding hang-up instantly without taking your eyes off your game or target.

Melonite Protected Barrel for Hard-Hitting Longevity

The premium 4150 CMV barrel is shielded inside and out with a slick, ultra-hard Melonite (QPQ) finish. This advanced liquid-nitride treatment seals the pore structure of the steel, expanding barrel life under heavy friction, boosting shot-to-shot velocity, and providing premier resistance against humidity, brush moisture, and foul weather exposure.

Sourced From Premium Domestic Partners

We believe in total transparency. That is why we proudly disclose that we source our barrels, rugged handguards, and raw receiver materials from elite US manufacturers like Hitman Industries, Kak Industry, and Bowden Tactical. You always know exactly what quality components are backing your investment.

Lifetime Warranty and Support

Every Pro2A Tactical manufactured upper receiver group is backed by a comprehensive **Lifetime Warranty** against defects in materials or workmanship to the original purchaser, giving you total peace of mind on the bench or in the backcountry.