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Push the absolute boundaries of long-range accuracy from the MSR platform while entirely modernizing manual weapon ergonomics. The PRO2A 20" 224 Valkyrie Rifle-Length NR Side Charging Melonite AR-15 Upper Kit is a comprehensive all-in-one build package that bundles a precision billet side-charging upper receiver assembly, a premium non-reciprocating side-charging bolt carrier group (BCG), an aluminum side-cocking handle, a full lower parts kit, and a 6-position adjustable stock/buffer layout. Built around an optimized 20-inch 4150 CMV steel barrel, this model utilizes an ultra-fast 1:6.5 twist rate engineered explicitly to stabilize heavy, low-drag match projectiles over massive distances. The non-reciprocating layout means the cocking handle stays fully stationary during live firing, keeping your optics workspace safe and clear. This complete bundle contains every premium internal and external component required to cleanly transform your stripped lower receiver into a finished long-range tack-driver. Proudly 100% designed, machined, and precision-tested in the USA.
| Upper Receiver | Gibbz Arms G4 Non Reciprocating Side Charging Billet Aluminum Receiver with Gen 2 Handle, M4 Feed Ramps, Type III Hardcoat Anodized Black |
|---|---|
| Charging Style | Left-Side Non-Reciprocating Manual Cocking Handle Assembly (Stays Stationary While Firing) |
| Bolt Carrier Group | Premium Left Hand Milspec, Nitride/Melonite Finish, M16 Profile, Properly Staked Gas Key, MPI Tested |
| Barrel Length & Steel | 20 Inch Profile, 4150 Chrome Moly Vanadium Steel, Medium Contour, Melonite Treated |
| Caliber | .224 Valkyrie |
| Twist Rate | 1:6.5 Twist (Optimized to stabilize heavy 80gr to 90gr low-drag match bullets) |
| Gas Operating Block | Rifle-Length System, Low-Profile Gas Block Machined from 4140 Steel, Stainless Steel Gas Tube |
| Muzzle Device | Standard 1/2-28 Thread Pitch, A2 Birdcage Flash Hider with Crush Washer Pre-Installed |
| Handguard | 15 Inch Slim Profile Free-Float M-LOK Rail, Full-Length Top Picatinny Rail, Machined from 6061-T6 Aluminum |
| Lower Parts Kit | Mil-Spec Polished Trigger & Hammer, Standard Pistol Grip, Lower Component Springs, and Pins Included |
| Stock Assembly | Standard Mil-Spec M4 Stock with 6-position buffer tube, standard 3oz buffer, buffer spring, latch plate, and castle nut |
| Manufacturing Origin | 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty |
The PRO2A 20" 224 Valkyrie NR Side Charging Melonite Upper Kit directly solves the three biggest hurdles facing precision long-range builders: stabilizing heavy match ammunition, generic rear ergonomics, and part-by-part component mismatching. While traditional 1:7 twist rates can struggle with heavy match bullets, Pro2A Tactical's specialized 1:6.5 fast-twist rifling forces instantaneous projectile stabilization right out of the chamber, ensuring high ballistic coefficients are maintained accurately downrange.Moving your manual charging interface to a static side layout fundamentally accelerates your manipulation speeds.
You can comfortably charge the chamber or cycle clearing paths from a natural firing position without disrupting your optical line of sight, breaking your cheek weld over the stock, or stretching over the top of the gun. Furthermore, by investing in a comprehensive, complete build kit rather than piecing your components together block-by-block, you eliminate dangerous headspace variations and tracking issues between distinct manufacturers. Backed completely by Pro2A Tactical's signature Lifetime Factory Warranty and engineered with 100% American craftsmanship, this master kit converts your stripped lower receiver into a premium, duty-ready long-range precision asset with absolute confidence.
| SKU | P2ANR224VGFS15RIF20-TK-KIT |
|---|---|
| Barrel Length | 20 inch |
| Rifle Caliber | 224 Valkyrie |
| Manufacturer | Pro2A Tactical |
