Are you at least 18 years old?
Shrink your footprint to the absolute minimum while enhancing manual manipulation. The PRO2A 5" 300 Blackout Micro Length Non-Reciprocating (NR) Side Charging Upper introduces a high-speed charging layout that relocates weapon staging to a left-side lever, remaining static during live firing cycles to preserve mechanical safety. Featuring a hard-hitting 5-inch 4150 CMV medium profile barrel, this assembly relies on a fine-tuned micro-length direct impingement gas system to cycle efficiently. The barrel utilizes an ultra-fast 1:5 twist rate to maximize rotational stabilization for heavy subsonic projectile trajectories, completely preventing keyholing out of a micro platform. An abbreviated 4-inch free-float slim profile handguard exposes the muzzle threads completely, supplying zero rail-to-silencer clearance issues when pairing this platform with direct-thread or quick-attach suppressors.
| Upper Receiver | Gibbz Arms G4 Billet Aluminum, Non-Reciprocating Left-Side Charging Configuration, Right-Hand Ejection Port, Type III Hardcoat Anodized Black |
|---|---|
| Charging Handle | Left-Side Non-Reciprocating Charging Handle (Stays static when firing) |
| Barrel Length & Profile | 5-Inch Medium Profile, Suppressor Ready (Exposed Muzzle Threads Setup) |
| Caliber | .300 AAC Blackout (Safely accepts both Subsonic and Supersonic factory loads) |
| Twist Rate | 1:5 Twist Rate (Highly optimized for heavy-grain subsonic projectiles and ultra-short barrel stabilization) |
| Barrel Material | 4150 Chrome Moly Vanadium Steel with QPQ Melonite Nitride Finish |
| Gas System | Micro Length Direct Impingement with Low-Profile Gas Block |
| Handguard | 4-Inch Free Float Slim Profile M-LOK Handguard Rail System |
| Muzzle Device | Standard A2 Flash Hider, 5/8-24 TPI |
The 300 Blackout cartridge is inherently optimized for shorter barrel configurations, turning an ultra-compact footprint into a hard-hitting defensive tool. By combining this micro performance with a static, non-reciprocating side-charging upper action, a fast 1:5 twist profile, and a short 4-inch M-LOK handguard that avoids rail-suppressor interference, Pro2A Tactical yields an uncompromised custom upper that is compatible with your existing AR-15 lower receiver.
| SKU | P2ANR300BLKAX4MIC5-HT |
|---|---|
| Barrel Length | 5 inch |
| Rifle Caliber | 300 Blackout |
| Manufacturer | Pro2A Tactical |