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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.
Maximize the tactical deployment of the 300 AAC Blackout cartridge with an intuitive left-side manual manual of arms and directed acoustics. The PRO2A 8.5" 300 Blackout Pistol Length Non-Reciprocating (NR) Side Charging Upper Assembly with Flash Can completely redesigns traditional frame ergonomics by swapping out the rear dual-pull tab for a left-side charging handle. The non-reciprocating handle stays entirely stationary while firing, providing a seamless operating zone free from moving external components near your optic mount. Pre-equipped with a slimline tactical flash can, it forces intense muzzle concussion and noise straight forward downrange away from the operator. Built around an 8.5-inch barrel—the universally recognized sweet spot for full powder combustion in the 300 BLK cartridge—this complete 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 | 8.5 Inch Medium Profile, 4150 Chrome Moly Vanadium Steel |
| Caliber | 300 AAC Blackout (300 BLK) |
| Twist Rate | 1:7 Twist |
| 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 | 10 Inch Slim Profile Free-Float M-LOK Handguard, Extended Profile Partially Tucking the Muzzle Device, Machined from 6061-T6 Aluminum |
| Manufacturing Origin | 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty |
Operators training inside confined environments or indoor lanes select this flash-can-equipped upper. It channels the sharp muzzle concussion of the 8.5" barrel completely forward and away from the shooter and adjacent lane partners, minimizing side-blast concussion feedback.
Hog and predator hunters running bulky low-power variable optics (LPVOs), complex night vision setups, or wide thermal sights prefer side-charging platforms. 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, reliable personal defense weapon choose this upper. The 8.5-inch setup secures full powder efficiency and optimal velocity within a highly compact footprint, delivering heavy .30-caliber energy downrange out of a lightweight build.
| SKU | P2ANR300BLKBW10PIS85CAN-TK |
|---|---|
| Barrel Length | 8.5 inch |
| Rifle Caliber | 300 Blackout |
| Manufacturer | Pro2A Tactical |