Experience an ultra-compact, hard-hitting defensive system tailored perfectly to Southpaw operators with the PRO2A Left Hand 6" 300 Blackout Upper Receiver Group. This specialized system comes assembled, headspaced, and performance-tested to attach effortlessly to any standard mil-spec lower assembly. Blending a left-handed ejection mechanism with a 6-inch barrel and an integrated linear blast forwarding device, this micro upper safely controls hot gases and concussive sound waves while maximizing tight-quarters agility.
Key Features
- Dedicated Left-Hand Ejection: Ejects spent brass and gases completely to the left, saving left-handed shooters from facial gas blowback and stray casings.
- Premium Melonite (QPQ) Hardened Core: Provides a diamond-hard, low-friction surface inside the bore and chamber to deliver superior corrosion defense and an extended operational lifespan.
- Linear Blast-Forward Flash Can: Directs muzzle blast, concussive pressure waves, and unburnt powder forward—away from the shooter—essential for short 6-inch configurations.
- Ultra-Slim Free-Float Handguard: Offers clean M-LOK attachment windows at the 3, 6, and 9 o'clock positions for low-profile weapon light or handstop placement.
- Rigorous Bench Inspections: Meticulously checked during hand-assembly for absolute gas port diameter uniformity, receiver alignment, and precise headspace limits.
Technical Product Specifications
- Caliber / Chamber: .300 AAC Blackout
- Barrel Length: 6 Inches (Micro Profile)
- Gas System Length: Pistol-Length (optimized for short dwell times and clean cycling mechanics)
- Barrel Twist Rate: 1/7 Twist Button Rifled (ideal for stabilizing heavy subsonic and standard supersonic projectiles)
- Barrel Material & Finish: 4150 Chrome Moly Vanadium with premium Melonite / Black Nitride QPQ treatment
- Upper Receiver Style: Dedicated Left-Hand (LH) Billet Aluminum with Left-Side Ejection Port
- Handguard Structure: 7 Inch Slim Free-Float M-LOK Handguard featuring a full-length top Picatinny rail
- Muzzle Device: 58-24 TPI Custom Slimline Flash Can (tucked neatly beneath the rail to route expansion energy downrange)
- Platform Compatibility: Pairs with all standard mil-spec AR-15 lower structures
- Origin: 100% Proudly Made in the USA from premium domestic materials
Why Choose the Pro2A Tactical Left Hand 6" 300 Blackout Upper?
The Ultimate Left-Hand PDW Configuration
Left-handed shooters firing short-barreled configurations often face substantial gas deflection and blowback from standard right-side ejecting uppers. This dedicated left-hand receiver layout mirrors standard ergonomics without compromises. Paired with a micro 6-inch profile, it creates an incredibly lightweight, agile personal defense weapon (PDW) optimized for vehicular operations or home defense deployment.
Engineered for Subsonic and Supersonic Dynamics
The 300 Blackout cartridge is structurally maximized for short barrel setups. Combined with a fast 1/7 twist rate and an explicitly calibrated pistol-length gas port, this upper establishes reliable internal dwell pressure. It safely cycles everything from heavy, whisper-quiet subsonic rounds to fast, hard-hitting supersonic options.
Honest American Craftsmanship and Lifetime Warranty
Pro2A Tactical takes pride in building firearms transparently right in Cumming, Georgia. Sourcing components from premier US manufacturers, each upper assembly is covered by a standard lifetime warranty against factory defects in materials or workmanship, keeping your setup protected out on the field.
