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Squeeze exceptional ballistic capability and tactical flexibility into a compact blueprint with the PRO2A LEFT HAND 7.5" 300 Blackout Upper Kit. Engineered natively from the ground up for left-handed operators, this complete package completely eliminates cross-body brass throwing and unmanaged facial gas blowback via its mirrored left-ejecting receiver system. The 7.5-inch medium profile barrel delivers optimized powder burn efficiency for the versatile 300 Blackout cartridge, available in standard 1:7 or fast 1:5 twist rates to perfectly stabilize heavy subsonic or fast supersonic loads. Paired with a slim 7-inch free-float M-LOK handguard and an all-inclusive lower conversion package, this turnkey kit streamlines your entire custom southpaw build project.
| Upper Receiver | Billet Aluminum, M4 Feed Ramps, (Dedicated Left-Hand Ejection Port Setup), Type III Hardcoat Anodized Black |
|---|---|
| Charging Handle | Standard Mil-Spec Charging Handle |
| Bolt Carrier Group | Milspec Left-Hand M16 Full Auto Profile, .300 AAC Blackout Caliber, QPQ Nitride/Melonite Treated, MPI Tested, 8620 Carrier with 9310 Steel Bolt |
| Barrel Length & Profile | 7.5-Inch Medium Profile |
| Caliber | .300 AAC Blackout (Safely accepts both Subsonic and Supersonic factory loads) |
| Twist Rate | 1:7 or 1:5 Twist Rate Option (Optimized for heavy subsonic match projectiles or versatile supersonic hunting ammo) |
| Barrel Material | 4150 Chrome Moly Vanadium Steel with QPQ Melonite Nitride Finish |
| Gas System | Pistol Length Direct Impingement with Low-Profile Gas Block |
| Handguard | 7-Inch Free Float Slim Profile M-LOK Handguard Rail System |
| Muzzle Device | Standard A2 Flash Hider, 5/8-24 TPI |
| 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 |
The 300 Blackout platform performs exceptionally well out of shorter barrel profiles, making this 7.5-inch system a premier choice for home defense or a compact backpack build. By merging custom-shop tolerances with a comprehensive lower build package and a mirrored southpaw action, Pro2A Tactical removes the compromise from left-handed firearms, ensuring an ergonomic and face-safe project build.
| SKU | P2AL300BLKAX7PIS75-TK-KIT |
|---|---|
| Barrel Length | 7.5 inch |
| Rifle Caliber | 300 Blackout |
| Manufacturer | Pro2A Tactical |
