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OPTION DETAILS
GAS BLOCK: Standard or Adjustable. Adjustable is a great option if you are using a suppressor or just want to fine tune your system.
Bolt Carrier Group: BCG is Optional. Select Nitride or Nickel Boron if you need a BCG to complete Upper . All our BCGs are M16 Profile, Properly Staked Gas Key, MP Tested, 8620 Carrier, 9310 Bolt. Nitride is a surface hardening process that creates a tough and slick surface. Nickel Boron provides the slickest surface which reduces friction and where dirt does not easily adhere to.
BARREL: 1:7 or 1:5 Twist Rate. Special 1:5 Twist Rate is designed to stabilize heavier grain bullets.
Dominate your close-quarters or suppressed personal defense weapon build with premium left-side manual acoustics and superior ergonomics. The PRO2A 7.5" 300 Blackout Pistol Length Non-Reciprocating (NR) Side Charging Upper Assembly with Flash Can updates traditional frame mechanics by replacing the standard rear dual-pull tab with an integrated side-charging lever. The cocking handle stays fully stationary during live fire, eliminating moving external parts near your optic spacing or support grip. Equipped with a pre-installed slimline tactical flash can, it forces severe muzzle concussion and noise straight forward away from the operator. Built around a precision 7.5-inch 4150 CMV barrel available with a versatile 1:7 twist or a lightning-fast 1:5 twist for heavy sub-sonic stabilization, this premium upper drops natively onto any Mil-Spec lower receiver. Proudly 100% designed, machined, and precision-assembled in the USA.
| Upper Receiver | Gibbz Arms G4 Non Reciprocating Side Charging Billet Aluminum Receiver with Gen 2 Handle, M4 Feed Ramps, Type III Hardcoat Anodized Black |
|---|---|
| Barrel Length & Steel | 7.5 Inch Medium Profile, 4150 Chrome Moly Vanadium Steel |
| Caliber | 300 AAC Blackout (300 BLK) |
| Twist Rate | 1:7 Twist (Standard) OR 1:5 Fast Twist (Highly recommended for sub-sonic stabilization) |
| Gas Operating Block | Pistol-Length System, Low-Profile Gas Block Machined from 4140 Steel, Stainless Steel Gas Tube |
| Muzzle Device | Standard 300 BLK Thread Pitch (5/8-24 Threads), Pre-Installed Slimline Linear Flash Can |
| Handguard | 9.5 Inch Slim Profile Competition Top Free-Float M-LOK Rail, Extended Profile Partially Tucked Muzzle, Machined from 6061-T6 Aluminum |
| Manufacturing Origin | 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty |
Operators training inside confined environments select this flash-can-equipped upper. It channels the aggressive acoustic concussion of the 7.5" barrel completely forward and away from the shooter and adjacent lane operators, eliminating side blast feedback.
Hog and predator hunters running bulky low-power variable optics (LPVOs), nocturnal digital arrays, or wide thermal sights prefer side chargers. The left-mounted handle leaves massive clearance space below the scope base, preventing scraped knuckles against large optical mounts.
Custom builders looking to construct a hard-hitting, compact home defense or backpack weapon choose this upper. Selecting the fast 1:5 twist ensures complete bullet stabilization in ultra-short configurations, delivering heavy .30-caliber energy downrange out of a lightweight build.
| SKU | P2ANR300BLKAXC95PIS75CAN-TK |
|---|---|
| Barrel Length | 7.5 inch |
| Rifle Caliber | 300 Blackout |
| Manufacturer | Pro2A Tactical |