PRO2A LEFT HAND 20" 6.5 Grendel 1/8 Rifle Length Melonite M-LOK AR-15 Upper
Product Overview
Engineered from the ground up for Southpaw precision shooters, the PRO2A Left Hand 20" 6.5 Grendel 1/8 Rifle Length Melonite M-LOK Upper delivers premium long-range performance without mechanical compromise. This fully assembled complete upper receiver brings the flat-shooting, hard-hitting characteristics of the 6.5 Grendel cartridge to left-handed operators. Built with a 20-inch 4150 CMV Melonite barrel and a dedicated left-ejecting bolt carrier group, this upper is ready to drop straight onto your standard AR-15 lower receiver.
Key Features
- Dedicated Left-Hand Design: Forged upper receiver features a left-side ejection port to keep scorching gases, unburnt powder, and spent brass out of your face and line of sight.
- 20-Inch Melonite Treatment Barrel: Crafted from 4150 Chrome Moly Vanadium steel and treated with a liquid QPQ Nitride/Melonite process for exceptional bore longevity and corrosion protection.
- Versatile 1:8 Twist Rate: Perfectly calculated twist stabilization to reliably drive popular 6.5 Grendel target and hunting projectiles ranging from 90gr to 130gr.
- Ultra-Smooth Rifle-Length Gas System: Delivers an optimized pressure cycle and a highly delayed bolt unlocking sequence, mitigating physical recoil and reducing internal component friction.
Technical Specifications
| Caliber / Chamber | 6.5 Grendel Type II |
|---|---|
| Barrel Length | 20 Inches |
| Barrel Material | 4150 Chrome Moly Vanadium (CMV) Steel |
| Twist Rate | 1:8 Button Rifled Twist |
| Barrel Finish | Melonite / QPQ Nitride Finish |
| Gas System Length | Rifle-Length Gas System with 0.750" Low Profile Gas Block |
| Upper Receiver | Left-Hand Ejection Billet Aluminum, M4 Feed Ramps, Type III Hardcoat Anodized |
| Handguard | 15" 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 Left-Handed 6.5 Grendel Upper?
The 6.5 Grendel cartridge is a premier choice for extending the effective range of the AR-15 platform for hunting and target shooting. However, left-handed shooters using standard right-hand receivers are routinely forced to accept harsh blowback gases directly across their vision. Pro2A Tactical eliminates this obstacle with a dedicated left-ejecting system. By combining this tailored ergonomic setup with a full 20-inch velocity-maximizing barrel and a soft-shooting rifle-length gas system, this upper receiver delivers flat, heavy-hitting accuracy downrange while providing a vastly cleaner, safer, and more natural workflow for the left-handed operator.
