PRO2A 20" 22 ARC 1/7 Rifle Length Melonite M-LOK AR-15 Upper Kit | Pro2A Tactical

PRO2A 20" 22 ARC 1/7 Rifle Length Melonite M-LOK AR-15 Upper Kit

Product Description

Unlock extreme high-velocity thresholds, ultra-flat trajectories, and match-grade precision out of a standard small-frame platform without individual component matching guesswork. The PRO2A 20" 22 ARC Rifle Length Melonite M-LOK Upper Kit provides an all-inclusive rifle completion package engineered explicitly to maximize the hyper-velocity attributes and high ballistic coefficients of Hornady's 22 Advanced Rifle Cartridge (ARC). Configured on a precision forged 7075-T6 aluminum receiver with tight right-side ejection tolerances, this setup houses a premium 20-inch 4150 CMV barrel. The aggressive 1:7 twist rate provides immaculate rotational stabilization for long, heavy, low-drag 22-caliber projectiles favored in long-range precision disciplines. Operating on a tuned rifle-length gas system to ensure highly regulated gas pressures, optimal dwell times, and soft mechanical tracking, this turn-key platform arrives completely paired with a matching type 2 bolt carrier group, full lower parts conversion kit, and an adjustable stock assembly. Drop these components into your standard stripped lower receiver to finish an elite precision long-range tool.

Key Features

Elongated 20-Inch Ballistic Mastery: Maximizes complete powder burn efficiency for the 22 ARC cartridge, yielding an absolute velocity premium over shorter barrels to flatten far-reaching trajectories.
Aggressive 1:7 Fast Twist Performance: Engineered explicitly to flawlessly stabilize high-BC heavy match ammunition profiles under intense downrange crosswind conditions.
Regulated Rifle-Length Gas Cycling: Softens internal operating pressure curves and dampens bolt carrier impact speed, providing a linear recoil pulse and prolonging component life.
Liquid Bath Nitride Protection: Full interior and exterior QPQ Melonite barrel coating provides maximum resistance to heat friction, extreme weather elements, and throat erosion.
Turn-Key Rifle Build Setup: No piecemeal component tracking required; arrives complete with a complete upper assembly, type 2 bolt carrier group, full lower parts kit, fire control trigger group, and a standard adjustable rifle stock assembly.

Technical Specifications

Upper Receiver	Milspec Forged 7075-T6 Aluminum, M4 Feed Ramps, Forward Assist & Dust Cover, Type III Hardcoat Anodized Black
Charging Handle	Standard Mil-Spec Charging Handle
Bolt Carrier Group	Milspec M16 Full Auto Profile, 22 ARC / 6.5 Grendel Type 2 Face Configuration, QPQ Nitride/Melonite Treated, MPI Tested, 8620 Carrier with 9310 Steel Bolt
Barrel Length & Profile	20-Inch Medium Contour
Caliber	22 ARC (Advanced Rifle Cartridge)
Twist Rate	1:7 Twist (Highly optimized for all loads and hunting 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, 1/2x28 Thread Pitch
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 22 ARC turns the standard small-frame AR-15 platform into a legitimate 1,000-yard competitor, pushing performance thresholds past traditional intermediate rounds. Pro2A Tactical removes precision construction variables by providing a fully matched Melonite core barrel, high-pressure type 2 bolt carrier group, smooth-cycling rifle gas layout, and an all-inclusive rifle-length stock bundle in one cohesive package. This premium, American-made assembly delivers elite mechanical consistency, flat paths, and superior field reliability right out of the box.

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