PRO2A 22" 6.5 Grendel 1/8 Rifle Length Melonite M-LOK AR-15 Upper
Product Overview
Maximize the long-range potential of your rifle with the PRO2A 22" 6.5 Grendel 1/8 Rifle Length Melonite M-LOK AR-15 Upper. This premium, factory-assembled complete upper receiver is designed to squeeze every ounce of velocity and energy out of the flat-shooting 6.5 Grendel cartridge. Built with a full 22-inch 4150 CMV Melonite-treated barrel for maximum dwell time and a smooth rifle-length gas loop, this upper drops right onto your standard AR-15 lower receiver to create a supreme long-range target and hunting platform.
Key Features
- Full 22-Inch Velocity Barrel: Optimizes powder burn and extends muzzle velocities to push the 6.5 Grendel bullet to its true supersonic limits downrange.
- Premium Melonite Treatment: The high-grade 4150 CMV steel barrel is treated inside and out with a liquid QPQ Nitride/Melonite layer for superior surface hardness and elite corrosion protection.
- Precision 1:8 Twist Rate: Perfectly calculated twist stabilization to reliably drive popular 6.5 Grendel match ammunition and heavy hunting projectiles (up to 130gr).
- Ultra-Smooth Rifle-Length Gas System: Delivers a highly delayed bolt unlocking sequence, mitigating physical recoil while preserving internal component life and brass casings.
- Slim Free-Float M-LOK Handguard: Features a continuous top Picatinny rail and ample modular space for accessories like bipods, optics, and lights.
- Drop-In Operational Completeness: Arrives fully assembled, headspaced, and factory test-fired before shipping
Technical Specifications
| Caliber / Chamber | 6.5 Grendel Type II |
|---|---|
| Barrel Length | 22 Inches |
| Barrel Material | 4150 Chrome Moly Vanadium (CMV) Steel |
| Twist Rate | 1:8 Precision Twist |
| Barrel Finish | Melonite / QPQ Nitride Finish |
| Gas System Length | Rifle-Length Gas System with 0.750" Low Profile Gas Block |
| Upper Receiver | Mil-Spec Forged 7075-T6 Aluminum, M4 Feed Ramps, Forward Assist & Dust Cover Installed, Type III Hardcoat Anodized |
| Handguard | 15" Premium Slim Free-Float M-LOK Handguard (6061-T6 Aluminum) with Full Top Rail |
| Muzzle Thread & Device | 5/8x24 TPI; Standard A2 Flash Hider |
| Manufacturing Origin | 100% Made in the USA |
Why Choose the PRO2A 22" 6.5 Grendel Upper?
The 6.5 Grendel is a phenomenal cartridge capable of converting a standard AR-15 into a legitimate 1,000-yard target platform or medium-game hunting rifle. However, shorter barrels often leave valuable muzzle velocity on the table. The Pro2A Tactical 22" Upper Group solves this by using a full rifle-length velocity profile that extracts peak ballistic performance from your choice of factory match or hunting ammunition. Tuned and test-fired directly out of the box with a precise Type II bolt system and a soft-cycling rifle-length gas loop, this complete setup eliminates assembly worries and delivers predictable sub-MOA accuracy without custom shop prices.
