PRO2A 20" 6.5 Grendel 1/8 Rifle Length Melonite M-LOK AR-15 Upper
By Pro2A Tactical | Made in the USA
Elite Long-Range Precision & Medium-Game Domination
The Pro2A Tactical 20" 6.5 Grendel Upper Receiver is engineered for shooters looking to stretch the boundaries of the AR-15 platform. Optimized to deliver bolt-action precision in a semi-automatic layout, this configuration features a premium 20-inch 4150 Chrome Moly Vanadium barrel. Its 1/8 twist rate provides outstanding mechanical stabilization across a massive variety of popular medium to heavy 6.5mm projectiles. With an advanced liquid-ferritic nitrocarburizing Melonite (QPQ Nitride) finish on both the inner bore and exterior, the barrel gains immense surface resilience, incredible corrosion defense, and a highly simplified cleaning routine.
By employing a full rifle-length gas system, this upper dramatically softens the impulse profile of the high-velocity 6.5 Grendel round. Dwell time is optimized to provide smooth cycling, reduced component fatigue, and lightning-fast weapon tracking for successive downrange follow-ups. Encased in a slim, rigid free-float M-LOK rail system, it clears up barrel harmonics entirely while providing ample space to attach support gear, bipods, and night-hunting accessories.
Why Buy the PRO2A 20" 6.5 Grendel Upper?
Maximum Velocity & Ballistics
The 20-inch barrel length squeezes every ounce of velocity out of the 6.5 Grendel cartridge, effectively pushing your supersonic threshold past 1,000 yards while maximizing energy delivery on targets.
Smooth Rifle-Length Cycling
A true rifle-length gas system reduces peak pressures and smooths out the extraction cycle, mitigating hard mechanical recoil to let you stay perfectly locked on target through your optics string.
Melonite Bore Protection
Our deep QPQ treatment hardens the high-stress rifling and throat beyond standard hard-chrome lining tolerances, preventing accuracy decay over a long operational service life.
100% Mil-Spec Adaptability
Forged from rugged 7075-T6 aluminum, this upper receiver effortlessly mates to any standard mil-spec AR-15 lower block. Simply slide it onto your lower, swap to a 6.5 Grendel magazine, and begin hunting.
Technical Specifications
- Caliber: 6.5 Grendel (Type 2 optimized)
- Barrel Length: 20 Inches
- Twist Rate: 1/8 Twist
- Gas System Length: Rifle Length
- Barrel Finish: Melonite / QPQ Nitride
- Barrel Profile: Medium Profile
- Barrel Material: 4150 CMV Premium Premium Steel
- Muzzle: 5/8x24 TPI A2 Flash Hider
- Upper Receiver: Hard Coat Anodized Black Forged Mil-Spec 7075-T6 Aluminum with M4 Feed Ramps, Forward Assist & Port Cover
- Handguard: 15 inch Ergonomic Free Float M-LOK Rail System
- Gas Block Set: Low Profile Gas Block
Key Product Features
- Versatile 1/8 Twist: The perfect sweet spot to stabilize lightweight varmint bullets as well as heavy match or premium hunting projectile weights.
- Continuous Top Picatinny Rail: Perfect monolithic alignment with standard lower configurations to securely support heavy long-range scopes or thermal arrays.
- Certified Armorer Assembly: Meticulously constructed and inspected to guarantee maximum operational tolerances, correct headspace, and proper component alignment.
Lifetime Warranty Included
Every premium upper assembly from Pro2A Tactical is backed by our full comprehensive lifetime warranty against manufacturer defects, giving you total peace of mind on the range or in the field.
