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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 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.
Maximize the performance of the inherently accurate 6.5 Grendel cartridge in a tight, fast-handling profile. The PRO2A 12.5" 6.5 Grendel Carbine Length Non-Reciprocating (NR) Side Charging Upper Assembly with Flash Can upgrades standard frame ergonomics by swapping out the rear dual-pull tab for a left-side charging handle. The handle stays fully stationary during live fire, eliminating moving external parts near your optics. Pre-equipped with a slimline tactical flash can, it forces intense muzzle concussion and noise straight forward downrange away from the operator. Built around a 12.5-inch 4150 CMV barrel tuned with a carbine-length gas path for smooth operation, this premium upper drops natively onto any standard 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 | 12.5 Inch Medium Profile, 4150 Chrome Moly Vanadium Steel |
| Caliber | 6.5 Grendel Type II (.136" Bolt Face Depth) |
| Twist Rate | 1:8 Twist |
| Gas Operating Block | Carbine-Length System, Low-Profile Gas Block Machined from 4140 Steel, Stainless Steel Gas Tube |
| Muzzle Device | Standard 6.5 Grendel Thread Pitch (5/8-24 Threads), Pre-Installed Slimline Linear Flash Can |
| Handguard | 15 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 |
Hunters navigating thick timber or cramped blinds choose this 12.5-inch setup. It balances an ultra-compact footprint for easy swinging with the heavy downrange impact of the 6.5 Grendel cartridge, outperforming standard sub-calibers on medium-sized game.
Predator and hog hunters running bulky low-power variable optics (LPVOs) 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 mounts.
Enthusiasts wanting to push an inherently accurate long-range cartridge within a highly compact, mobile layout choose this upper. The configuration provides a rigid, soft-shooting platform that is easy to manage on standard pistol or SBR lower builds.
| SKU | P2ANR65GAX15CAR125CAN-TK |
|---|---|
| Barrel Length | 12.5 inch |
| Rifle Caliber | 6.5 Grendel |
| Manufacturer | Pro2A Tactical |