FREE STANDARD SHIPPING ORDERS $250+
AGE VERIFICATION REQUIRED
Are you at least 18 years old?
Are you at least 18 years old?
Maximize the performance of the inherently precise 6.5 Grendel cartridge in a tight, fast-handling profile. The PRO2A 12.5" 6.5 Grendel Carbine Length Melonite M-LOK Upper Assembly offers shooters a high-energy alternative to traditional sub-calibers, delivering significant downrange energy from a shorter barrel length. Built around a precision 12.5-inch 4150 CMV steel barrel and tuned with a carbine-length gas path for smooth, reliable operation, this complete upper receiver assembly drops natively onto any standard Mil-Spec lower receiver configured as a legal pistol or registered Short Barreled Rifle (SBR). Proudly 100% designed, machined, and precision-assembled in the USA.
| Upper Receiver | Mil-Spec Forged 7075-T6 Aluminum, M4 Feed Ramps, Type III Hardcoat Anodized Black Finish (Forward Assist & Ejection Port Cover Pre-Installed) |
|---|---|
| Barrel Length & Steel | 12.5 Inch Profile, 4150 Chrome Moly Vanadium Steel, Melonite Treated |
| 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), A2 Flash Hider with Crush Washer |
| Handguard | 10 inch Slim Profile Free-Float M-LOK Handguard, Machined from 6061-T6 Aluminum |
| Manufacturing Origin | 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty |
Hunters navigating thick timber or cramped deer blinds choose this 12.5-inch setup. It balances an ultra-compact footprint for quick weapon swinging with the heavy downrange impact of the 6.5 Grendel cartridge, outperforming standard 5.56 setups on medium-sized game.
Shooters who run frequent carbine courses, barricade drills, and high-volume target tracking value the lightweight front end of this configuration. The short barrel accelerates target transition speed while minimizing physical fatigue over long training days.
Enthusiasts wanting to push an inherently accurate cartridge within a highly compact, mobile layout choose this upper. The configuration provides a rigid, reliable drop-in solution that is easy to manage on standard pistol or registered SBR lower builds.
| SKU | P2A65GGFS10CAR125-TK |
|---|---|
| Barrel Length | 12.5 inch |
| Rifle Caliber | 6.5 Grendel |
| Manufacturer | Pro2A Tactical |
