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Optimize your tactical maneuverability and build handling with the PRO2A 14.5" 5.56 NATO Non-Reciprocating (NR) Side Charging AR-15 Upper Receiver Assembly. Engineered from the ground up for superior ergonomics and smooth operation, this premium complete upper drops directly onto any standard Mil-Spec AR-15 lower receiver. Shifting the charging system to a stationary, left-side location clears room over traditional rear handles and provides uninterrupted clearance for large rifle scopes, LPVOs, and optics. Built around an ultra-durable 1/7 twist Melonite barrel and a specialized side-charging carrier, it delivers reliable, flat-shooting accuracy in a highly compact footprint.
| Upper Receiver Assembly | Gibbz Arms G4 Premium Non-Reciprocating Side Charging Upper Receiver, M4 Feed Ramps, Left-Side Charging Handle Slot, Type III Hardcoat Anodized Black Finish |
|---|---|
| Charging Handle | Left-Side Non-Reciprocating Charging Handle Assembly (Stationary During Firing Cycle) |
| Barrel Component | 14.5 Inch Profile, 4150 Chrome Moly Vanadium Steel, Medium Contour, Melonite Treated Interior & Exterior Bore |
| Caliber | 5.56 NATO (Accepts .223 Remington) |
| Twist Rate | 1:7 Twist |
| Gas Operating Block & System | Mid-Length Gas System, Low-Profile Gas Block Machined from 4140 Steel, Stainless Steel Gas Tube |
| Muzzle Device Component | Standard 1/2x28 Thread Pitch, A2 Birdcage Flash Hider with Crush Washer Pre-Installed |
| Handguard Rail | 12 Inch Slim Profile Free-Float Aluminum Handguard, Continuous Top Picatinny Alignment, Modular M-LOK Attachment Points |
| Manufacturing Origin | 100% Assembled and Quality Checked in the USA with Pro2A Tactical Lifetime Factory Warranty |
Traditional rear-charging AR uppers create ergonomic bottlenecks when running optics or clearing malfunctions under pressure. The PRO2A 14.5" 5.56 NATO Non-Reciprocating Side Charging Upper directly resolves this friction by integrating a smooth, left-side manual cocking mechanism that lets you cycle the weapon without breaking your sight picture. The 14.5-inch barrel configuration yields a highly maneuverable platform that tracks targets exceptionally fast, while the soft-shooting mid-length gas system keeps recoil to an absolute minimum. Hand-assembled, headspaced, and quality-tested in the USA, it provides a seamless blend of duty-grade reliability and modernized AR ergonomics.
| SKU | P2ANR556GFS12CAR145-TK |
|---|---|
| Barrel Length | 14.5 inch |
| Rifle Caliber | 5.56 NATO |
| Manufacturer | Pro2A Tactical |
