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Maximize your velocity scaling, terminal energy retention, and side-charging operation ergonomics on standard AR platforms without component matching guesswork. The PRO2A 18" 6.8 SPC II Mid Length NR Side Charging Upper Kit is meticulously engineered to bypass traditional rear-charging constraints by relocating staging to a left-side non-reciprocating handle layout that remains completely stationary while live rounds cycle, protecting the operator's forward hand grip. Built around a premium billet aluminum receiver block with a standard right-side ejection configuration, this system centers on an 18-inch medium profile barrel. The 1:11 twist rate and Spec II chambering combine to safely handle modern factory hunting loads with minimized pressure margins. A smooth direct impingement mid-length gas setup ensures a comfortable, uniform cycling stroke, while an extended 15-inch free-float aluminum handguard wraps the barrel to supply structural rigidity and massive accessory placement space. Bundled alongside an all-inclusive lower parts conversion package and a true rifle stock assembly, this turn-key system converts any standard stripped lower receiver into an elite side-charging medium game hunting rifle.
| Upper Receiver | Gibbz Arms G4 Billet Aluminum, Non-Reciprocating Left-Side Charging Configuration, Right-Hand Ejection Port, Type III Hardcoat Anodized Black |
|---|---|
| Charging Handle | Left-Side Non-Reciprocating Charging Handle (Stays static when firing) |
| Bolt Carrier Group | Milspec M16 Full Auto Profile, 6.8 SPC II Caliber, QPQ Nitride/Melonite Treated, MPI Tested, 8620 Carrier with 9310 Steel Bolt |
| Barrel Length & Profile | 18-Inch Medium Profile |
| Caliber | 6.8 SPC II (SPEC II Chamber) |
| Twist Rate | 1:11 Twist Rate (Highly optimized for standard hunting loads and reduced internal friction parameters) |
| Barrel Material | 4150 Chrome Moly Vanadium Steel with QPQ Melonite Nitride Finish |
| Gas System | Mid Length Direct Impingement with Low-Profile Gas Block |
| Handguard | 15-Inch Free Float Slim Profile M-LOK Handguard Rail System |
| Muzzle Device | Standard A2 Flash Hider, 5/8-24 TPI |
| Lower Parts Kit | Complete AR-15 Lower Parts Kit (LPK) including Pivot/Takedown Pins, Bolt Catch, Magazine Catch, Springs, Detents, Standard Pistol Grip, and Mil-Spec Fire Control Group (Trigger & Hammer Assembly) |
| Stock Assembly | M4 Carbine Adjustable Buttstock, 6-Position Mil-Spec Buffer Tube (Receiver Extension), Carbine Recoil Buffer, and Spring |
Shifting your intermediate rifle platform to a non-reciprocating side charger completely changes the manual of arms, granting bolt-manipulation access without breaking your cheek weld or target focus. Pro2A Tactical pairs this high-speed manipulation with an elongated 18-inch Spec II hunting core and a non-NFA compliant stock bundle, delivering an American-made complete upper receiver assembly optimized for downrange knockdown consistency and elite field performance.
| SKU | P2ANR68AX15MID18-TK-KIT |
|---|---|
| Barrel Length | 18 inch |
| Rifle Caliber | 6.8 SPC II |
| Manufacturer | Pro2A Tactical |