PRO2A Left Hand 20" 6.5 Grendel Melonite M-LOK AR-15 Upper Kit

PRO2A LEFT HAND 20" 6.5 Grendel 1/8 Rifle Length Melonite M-LOK AR-15 Upper Kit

Product Description

Maximize the velocity potential, flat tracking, and downrange kinetic retention of your precision platform. The PRO2A LEFT HAND 20" 6.5 Grendel Upper Kit delivers maximum ballistic capabilities to left-handed operators without compromise. Utilizing a mirrored left-ejecting receiver profile and a matching left-hand M16 bolt carrier group, this complete rifle package moves gas blowback and high-speed casing ejection safely away from your face. The full-length 20-inch medium profile barrel optimizes powder efficiency for the low-drag 6.5 Grendel projectile, while the true rifle-length gas system ensures an incredibly smooth, low-impulse recoil stroke. Combined with an all-inclusive lower receiver build group, this kit provides everything required to finish your custom southpaw rifle build.

Key Features

True Left-Hand Architecture: Mirrored left-side ejection keeps spent casings, visual distractions, and mechanical gases far away from southpaw shooters.
Full-Length 20-Inch Velocity: Extracts maximum terminal ballistics and optimal kinetic energy parameters from the 6.5 Grendel round, serving as a premier long-range hunting and steel setup.
Ultra-Smooth Rifle Gas System: Elongated gas transit drops dwell times and cyclic port pressures, generating a soft, highly controllable shooting experience.
Premium QPQ Melonite Finish: Liquid nitride hardened 4150 Chrome Moly Vanadium barrel ensures severe weatherproofing, extreme throat life, and prolonged precision.
Complete Rifle Build Setup: Features a complete lower parts kit and a standard adjustable rifle stock assembly—no piecemeal component sourcing required.

Technical Specifications

Upper Receiver	Billet Aluminum, M4 Feed Ramps, (Dedicated Left-Hand Ejection Port Setup), Type III Hardcoat Anodized Black
Charging Handle	Standard Mil-Spec Charging Handle
Bolt Carrier Group	Milspec Left-Hand M16 Full Auto Profile, 6.5 Grendel Type II Bolt Face (.136" Face Depth), QPQ Nitride/Melonite Treated, MPI Tested, 8620 Carrier with 9310 Steel Bolt
Barrel Length & Profile	20-Inch Medium Profile
Caliber	6.5 Grendel (Type II)
Twist Rate	1:8 Twist Rate (Highly optimized for stabilizing standard to heavy-weight hunting and match projectiles)
Barrel Material	4150 Chrome Moly Vanadium Steel with QPQ Melonite Nitride Finish
Gas System	Rifle Length Direct Impingement with Low-Profile Gas Block
Handguard	15-Inch Free Float Slim Profile M-LOK Handguard Rail System
Muzzle Device	Standard A2 Flash Hider, 5/8-24 TPI
Lower Parts Kit	Complete AR-15 Lower Parts Kit (LPK) including Pivot/Takedown Pins, Bolt Catch, Magazine Catch, Springs, Detents, Standard Pistol Grip, and Mil-Spec Fire Control Group (Trigger & Hammer Assembly)
Stock Assembly	M4 Carbine Adjustable Buttstock, 6-Position Mil-Spec Buffer Tube (Receiver Extension), Carbine Recoil Buffer, and Spring

Why Choose This Product?

The 20-inch 6.5 Grendel configuration is the gold standard for long-range precision within the intermediate AR-15 platform, extracting the highest velocity parameters to stretch your effective range far beyond shorter builds. By pairing full-length precision capabilities with an all-inclusive rifle stock bundle and true left-handed mechanical components, Pro2A Tactical removes the compromise from custom builds, ensuring southpaw shooters can step up to premium performance safely and comfortably.