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The PRO2A LEFT HAND 13.7" 5.56 NATO Mid Length Melonite M-LOK Upper Kit with Pinned & Welded Muzzle Device offers a comprehensive, premium construction bundle engineered explicitly for southpaw shooters. Chambered in reliable 5.56 NATO, this all-in-one rifle assembly package mirrors standard setups to keep gas and burning debris completely out of a left-handed shooter's line of sight. This kit includes a left-hand eject upper receiver paired with a matching left-handed bolt carrier group, standard charging handle, complete lower parts kit, and an adjustable carbine stock buffer assembly. Featuring a permanently pinned and welded slimline flash can to securely meet federal compliance lengths without complex regulatory paperwork, it brings specialized tactical ergonomics right out of the box.
| Upper Receiver | Milspec Billet Aluminum, Left Hand Ejection, M4 Feed Ramps, Anodized Black |
|---|---|
| Barrel Length | 13.7-Inch Barrel (Permanently achieves 16-Inch Overall Length via Pinned & Welded muzzle device) |
| Caliber | 5.56 NATO (Safely accepts .223 Remington) |
| Twist Rate | 1:7 Twist Rate |
| Barrel Material | 4150 Chrome Moly Vanadium Steel with QPQ Melonite Nitride Finish |
| Gas System | Mid Length Direct Impingement with Low-Profile Gas Block |
| Handguard | 12-Inch Extended Free Float Slim Profile M-LOK Handguard Rail System |
| Muzzle Device | "Pro2A Flash Guardian" 3 Prong Flash Hider (Permanently Pinned and Welded / 1/2x28 Thread Base) |
| Bolt Carrier Group | Left-Hand Specific M16 Profile, Heavy Duty Bolt Carrier Group, Nitride Treated, Properly Staked Gas Key |
| Charging Handle | Milspec Standard Charging Handle |
| Lower Parts Kit | Complete AR-15 Lower Parts Kit (LPK) with Fire Control Group, Grip, and Milspec Trigger Setup |
| Stock Assembly | 6-Position Adjustable Carbine M4 Stock with Buffer Tube, Buffer Spring, Castle Nut, and Receiver End Plate |
| Manufacturing Origin | 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty |
Left-handed enthusiasts wanting a compact visual and physical properties of a short-barreled tactical setup choose this model to bypass long federal application wait times. It mounts cleanly onto standard lower receivers while providing maximum operational agility and ergonomic comfort.
Shooters seeking a flat-tracking firearm setup choose the mid-length configuration to reduce muzzle rise during rapid shot strings. The mirrored ejection pattern ensures thousands of rounds can be shot during intense training cycles without facial exposure to blowback.
| SKU | P2AL556GFS12MID137BA-KIT-PW |
|---|---|
| Barrel Length | 13.7 inch |
| Rifle Caliber | 5.56 NATO |
| Manufacturer | Pro2A Tactical |
