Are you at least 18 years old?
Push the boundaries of the MSR platform past the 1,000-yard milestone without battling face-directed gas or casing deflection. The PRO2A Left Hand 22" 224 Valkyrie Rifle-Length Melonite AR-15 Upper Kit is a master-tier, comprehensive assembly package combining a precision left-ejecting upper assembly, matching left-hand bolt carrier group (BCG), charging handle, lower parts kit, and adjustable stock setup. Built around an extended 22-inch 4150 CMV steel barrel with an ultra-fast 1:6.5 twist rate, this configuration provides the high rotational velocity necessary to stabilize heavy, low-drag long-range projectiles. The rifle-length gas system balances high pressure safely, generating exceptionally flat trajectories and minimum recoil. Designed to drop flawlessly onto your preferred standard stripped lower receiver, this complete package introduces true ergonomic equity to long-range tactical shooters. Proudly 100% designed, machined, and precision-tested in the USA.
| Upper Receiver | Dedicated Left-Handed Ejection, Precision Billet Aluminum, M4 Feed Ramps, Type III Hardcoat Anodized Black Finish |
|---|---|
| Bolt Carrier Group | Premium Left-Handed Milspec, M16 Profile, Nitride/Melonite Finish, Correctly Headspaced |
| Charging Handle | Standard Mil-Spec Aluminum Charging Handle |
| Barrel Length & Steel | 22 Inch Profile, 4150 Chrome Moly Vanadium Steel, Heavy Contour, Melonite Treated |
| Caliber | .224 Valkyrie |
| Twist Rate | 1:6.5 Twist (Optimized for 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" Slim Profile Free-Float M-LOK Rail, 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 Left Hand 22" 224 Valkyrie Master Build Kit completely eliminates the operational struggles left-handed shooters experience during precision benchrest or long-range prone strings. Standard right-handed receivers vent heavy pressure spikes and powder debris directly across a left-dominant shooter's face, causing severe eye distraction and fatigue during match sequences. Flipping the ejection path permanently resolves this issue, ensuring full safety and comfort.
| SKU | P2AL224AX15RIF22-TK-KIT |
|---|---|
| Barrel Length | 22 inch |
| Rifle Caliber | 224 Valkyrie |
| Manufacturer | Pro2A Tactical |