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The PRO2A Left Hand 10.5" 5.56 NATO Carbine Length Melonite M-LOK AR-15 Upper Kit is an all-inclusive conversion package precision-engineered for left-handed operators building a versatile short-barreled tactical platform or personal defense weapon. This complete build kit removes all component matching guesswork by pairing a true left-ejecting forged upper receiver and specialized left-handed bolt carrier group with a full lower completion parts kit and stock assembly, providing southpaw builders with everything required to turn a standard stripped lower receiver into a highly maneuverable platform.
| Upper Receiver | Billet Aluminum, M4 Feed Ramps (Dedicated Left-Hand Ejection Port Setup) |
|---|---|
| Charging System | Standard Mil-Spec Charging Handle |
| Bolt Carrier Group | Milspec Left-Hand M16 Full Auto Profile, QPQ Nitride/Melonite Treated, MPI Tested |
| Barrel Length & Profile | 10.5-Inch Medium Profile |
| Caliber | 5.56 NATO (Safely accepts .223 Remington) |
| Twist Rate | 1:7 Twist Rate (Highly optimized for standard 62gr to heavy 77gr match projectiles) |
| Barrel Material | 4150 Chrome Moly Vanadium Steel with QPQ Melonite Nitride Finish |
| Gas System | Carbine Length Direct Impingement with Low-Profile Gas Block |
| Handguard | 9 Inch or 10-Inch Free Float Slim Profile M-LOK Handguard Rail System |
| Muzzle Device | 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) |
| Blade Assembly | High Density Adjustable Blade, Pistol Buffer Tube (Receiver Extension), Carbine Recoil Buffer, and Spring |
This premium 10.5-inch left-handed bundle provides builders with a seamless pathway to extreme short-platform portability without compromising user ergonomics. By integrating a dedicated left-handed bolt carrier group with full lower parts completion hardware and a reliable buffer system, it eliminates the harsh face blowback common to shooting right-handed short uppers left-handed. This streamlined package ensures uniform cycling reliability, presenting an exceptional foundation for close-quarters platforms or home-defense configurations.
| SKU | P2AL556AX9CAR105-TK-KIT |
|---|---|
| Barrel Length | 10.5 inch |
| Rifle Caliber | 5.56 NATO |
| Manufacturer | Pro2A Tactical |