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Unlock extreme high-velocity thresholds, ultra-flat trajectories, and match-grade precision out of a standard small-frame platform while completely elevating southpaw controls, mechanical reliability, and manual operation speed without component matching guesswork. The PRO2A LEFT HAND 20" 22 ARC Rifle Length NR Side Charging Melonite M-LOK Upper Kit provides an all-inclusive rifle completion package engineered explicitly to maximize the hyper-velocity attributes and high ballistic coefficients of Hornady's 22 Advanced Rifle Cartridge (ARC), tailored natively from the ground up for southpaw operators. Shifting away from a traditional rear charging design, it implements a left-side non-reciprocating side charging handle layout that remains completely stationary while live rounds cycle, preserving absolute shooting safety and protecting the operator's support hand grip. Built around a premium mirrored billet aluminum receiver block with a dedicated left-hand ejection port setup, this system completely removes cross-body brass throwing and facial carbon gas blowback typical of right-handed precision platforms. The premium 20-inch 4150 CMV barrel utilizes an aggressive 1:7 twist rate to provide immaculate rotational stabilization for long, heavy, low-drag 22-caliber projectiles. Operating on a tuned rifle-length gas system to ensure highly regulated gas pressures, optimal dwell times, and soft mechanical tracking, this turn-key platform arrives completely paired with a matching side-charge type 2 left-hand bolt carrier group, full lower parts conversion kit, and an adjustable stock assembly. Drop these components into your standard stripped lower receiver to finish an elite precision long-range southpaw tool.
| Upper Receiver | Patented Gibbz Arms G4 Billet Aluminum, True Left-Hand Configuration, Non-Reciprocating Right-Side Charging, Dedicated Left-Hand Ejection Port Setup, Type III Hardcoat Anodized Black |
|---|---|
| Charging Handle | Right-Side Non-Reciprocating Charging Handle (Stays static when firing) |
| Bolt Carrier Group | Milspec Left-Hand M16 Full Auto Profile, 22 ARC / 6.5 Grendel Type 2 Face Configuration, QPQ Nitride/Melonite Treated, MPI Tested, 8620 Carrier with 9310 Steel Bolt |
| Barrel Length & Profile | 20-Inch Medium Contour |
| Caliber | 22 ARC (Advanced Rifle Cartridge) |
| Twist Rate | 1:7 Twist (Highly optimized for standard to heavy match and hunting projectiles) |
| Barrel Material | 4150 Chrome Moly Vanadium Steel with QPQ Melonite Nitride Finish |
| Gas System | Rifle 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, 1/2x28 Thread Pitch |
| 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 |
The 22 ARC turns the standard small-frame AR-15 platform into a legitimate 1,000-yard competitor, but adjusting your weapon configuration shouldn't force southpaw shooters to handle cross-body brass patterns or unmanaged gas blowback. Pro2A Tactical removes precision construction variables by providing a true mirrored left-ejection, non-reciprocating side-charging upper action with a fast 1:7 twist barrel, a high-pressure type 2 left-hand bolt carrier group, and an all-inclusive rifle-length stock bundle in one cohesive package. This premium, American-made assembly delivers elite ergonomic handling, flat paths, and superior field reliability right out of the box.
| SKU | P2ALNR22ARCGFS15RIF20-HT-KIT |
|---|---|
| Barrel Length | 20 inch |
| Rifle Caliber | 22 ARC |
| Manufacturer | Pro2A Tactical |