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Are you at least 18 years old?
Are you at least 18 years old?
The PRO2A 18" 6.5 Grendel 1/8 Mid Length NR Side Charging Melonite M-LOK AR-15 Upper brings long-range ballistic capability and advanced modern ergonomics to the standard AR-15 footprint. Built around an 18-inch 4150 CMV steel barrel chambered for Type II 6.5 Grendel, this complete upper receiver extracts the flat-shooting, high-energy potential required for ethical hunting and precision target targets at distance. Featuring an elite Non-Reciprocating (NR) side-charging handle, this system gives you smooth manual controls without standard rear T-handle limitations or cheek weld placement interference below heavy variable magnification optics.
| Caliber / Chamber: | 6.5 Grendel (Type II) |
| Barrel Length: | 18 Inches |
| Barrel Material: | 4150 Chrome Moly Vanadium Steel |
| Twist Rate: | 1:8 Right-Hand Twist |
| Barrel Coating Finish: | QPQ Melonite / Black Nitride Finish |
| Gas System Length: | Mid-Length System with 0.750" Low Profile Gas Block |
| Receiver Configuration: | Gibbz Arms G4 Billet Aluminum Non-Reciprocating Side Charging Upper Architecture, Gen 2 Handle (Type III Hardcoat Anodized) |
| Muzzle Threads & Device: | 5/8x24 TPI; Premium A2 Flash Hider |
| Handguard Interface: | 15 inch Free-Float Ergonomic Slim M-LOK Rail System with Continuous Top Picatinny Rail Layout |
| Manufacturing Origin: | 100% Made in the USA |
This premium 18-inch 6.5 Grendel complete upper receiver delivers the ultimate blend of long-distance intermediate power, smooth mid-length gas tuning, and modern weapon ergonomics. By substituting standard rear military charging handles with an intuitive, non-reciprocating left-side manual handle, shooters enjoy an ultra-smooth weapon manipulation cycle that operates entirely clear of variable hunting optics or thermal setups. Outfitted with a highly durable Melonite-lined barrel and an independent free-float M-LOK handguard, this assembly provides true sub-MOA precision, peak downrange energy, and total firing comfort over extended operational ranges.
| SKU | P2ANR65GFS15MID18-TK |
|---|---|
| Barrel Length | 18 inch |
| Rifle Caliber | 6.5 Grendel |
| Manufacturer | Pro2A Tactical |
