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8.5 inch 300 BLACKOUT NR Side Charging Upper

PRO2A 8.5" 300 Blackout 1/7 Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper

10.5 inch AR-15 NR Side Charging 300 BLACKOUT M-LOK Keymod Melonite Upper

PRO2A 10.5" 300 Blackout 1/7 or 1/5 Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper

PRO2A 8.5" 300 Blackout 1/7 Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper with Flash Can

Rating:
100 % of 100
Special Price $639.99 $784.99

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.

Availability:
In stock
SKU
P2ANR300BLKBW10PIS85CAN-TK
PRO2A 8.5" 300 Blackout Pistol Length NR Side Charging Melonite M-LOK Upper with Flash Can | Pro2A Tactical

PRO2A 8.5" 300 Blackout Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper with Flash Can

Optimal 300 BLK Ballistics Enhanced by Stationary Side Cocking and Forward Blast Direction

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.

Key Features

  • Stationary Side-Charging Interface: The premium non-reciprocating left-side manual handle operates completely independently from the bolt carrier cycle. This allows for fluid charging from a prone or benched position and seals off the rear opening to block high-pressure gases from venting into your face.
  • Custom Slimline Flash Can: Pre-installed on the muzzle to manage the sharp acoustic blast typical of short-barrel configurations. It acts as a linear director, projecting noise, concussive pressure, and flash straight toward the target to maximize shooting lane comfort.
  • Full-Combustion 8.5-Inch Barrel: Specifically cut to 8.5 inches to capture the exact powder burn curve of standard 300 Blackout ammunition, ensuring maximum velocity efficiency and kinetic delivery within a highly compact physical profile.
  • Melonite/Nitride Barrel Protection: The heavy-duty 4150 CMV steel barrel is fully Nitride/Melonite treated inside and out. This premium chemical hardening vastly extends barrel life, aids in uniform thermal dissipation, and counters harsh weather corrosion.
  • Slim Profile Free-Float M-LOK Rail: Built from durable 6061-T6 aluminum, the free-float handguard completely isolates barrel vibrations to preserve uniform mechanical accuracy while offering extensive M-LOK attachment slots and a continuous top Picatinny rail.

Technical Specifications

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

Who Chooses This Upper Receiver?

Tactical Indoor & Close-Quarters Shooters

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.

Oversized Optics & Night Hunters

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.

Compact Truck Gun & PDW Builders

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.

More Information
SKU P2ANR300BLKBW10PIS85CAN-TK
Barrel Length 8.5 inch
Rifle Caliber 300 Blackout
Manufacturer Pro2A Tactical
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