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12.5 inch AR-15 Non Reciprocating Side Charging 5.56 NATO Mid M-LOK Carbine Melonite Upper

PRO2A 12.5" 5.56 NATO 1/7 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper

12.5 inch 5.56 NATO AR Upper Kit | Pro2A Tactical

PRO2A 12.5" 5.56 NATO 1/7 Carbine Length Melonite AR-15 Upper Kit

PRO2A 12.5" 5.56 NATO 1/7 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper with Flash Can

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Special Price $659.99 $859.99
Availability:
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SKU
P2ANR556AX15CAR125CAN-TK
PRO2A 12.5" 5.56 NATO 1/7 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper with Flash Can

PRO2A 12.5" 5.56 NATO 1/7 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper with Flash Can

Product Overview

The PRO2A 12.5" 5.56 NATO 1/7 Carbine Length NR Side Charging Melonite M-LOK AR-15 Upper with Flash Can brings advanced handling mechanics and comfortable muzzle control to a highly effective mid-tier ballistic length. Engineered strictly as a **standalone barreled upper receiver assembly only**, this system features a premium **Non-Reciprocating (NR) side-charging handle** that separates system tracking from manual charging movements. Paired with an integrated blast-forwarding linear flash can recessed smoothly within the modular handguard, this setup yields exceptional shooter comfort by reducing lateral percussion. Supply your preferred (or choose ours) bolt carrier group, and lower assemblies to customize your tactical build.

Key Features

  • Non-Reciprocating Left-Side Ergonomics: The charging handle stays completely stationary when firing, preserving your optic sight lines, mitigating optical obstruction, and accelerating manual cycle times.
  • Standalone Receiver Focus: Component-only structure isolates the barreled upper system so you can utilize your preferred (or ours) components and lower receiver builds without purchasing redundant parts.
  • Optimized 12.5-Inch Profile: Yields improved muzzle velocity and dwell time over shorter micro builds, keeping the 5.56 NATO cartridge hard-hitting downrange while remaining highly agile.
  • Concussive Muzzle Redirection: Pre-installed slimline flash can drives expanding gas pressures and heavy sound concussion directly downrange, keeping the operator comfortable during closed-structure or indoor training.
  • Reliable Carbine Gas Subsystem: Delivers a proven, reliable pressure curve designed to provide consistent extraction and positive cycling across a wide spectrum of factory ammunition.
  • Military-Grade 1:7 Twist Profile: Highly optimized to reliably stabilize heavier tactical projectiles (such as 62gr, 69gr, and 77gr duty loads) over extended operational envelopes.
  • Liquid QPQ Melonite Preservation: Full-immersion liquid nitriding creates an incredibly slick, hard-wearing surface inside the 4150 CMV steel barrel core to handle sustained friction, gas wear, and humidity.
  • Extended Handguard Architecture: Extended free-float rail recesses the muzzle assembly cleanly beneath the handguard for maximum grip real estate and sleek aesthetic integration.

Technical Specifications

Upper ReceiverGibbz Arms G4 Billet 7075-T6 Aluminum, Non-Reciprocating Left-Side Charging Track Layout, Type III Hardcoat Anodized Black Finish
Barrel Length & Profile12.5-Inch Medium Profile
Caliber5.56 NATO (Accepts .223 Remington)
Twist Rate1:7 Twist Rate (Optimized for heavy grain tracking and duty round stabilization)
Barrel Material4150 Chrome Moly Vanadium Steel with Premium Melonite/QPQ Treatment
Gas SystemCarbine Length Direct Impingement with Low-Profile Gas Block
Handguard15-Inch Extended Free Float Slim Profile M-LOK Rail System (Recesses muzzle assembly cleanly)
Muzzle DeviceSlimline Blast-Forwarding Linear Flash Can (1/2x28 Thread Pitch)

Why Choose This Product

Transitioning weapon manipulation to a fixed left-side lever completely eliminates the awkward clearance issues of standard rear-charging latches underneath large optics footprints. This layout isolates gas paths away from the operator's face while keeping manual cycling right in the workspace. By pairing this custom control deck with an integrated blast-forwarding device, you resolve the uncomfortable lateral concussions typical of shorter 5.56 barrels, making it ideal for home defense or indoor range applications. 100% proudly manufactured in the USA from heavy-duty raw metals, this standalone upper platform ensures reliable capability right out of the box.

More Information
SKU P2ANR556AX15CAR125CAN-TK
Barrel Length 12.5 inch
Rifle Caliber 5.56 NATO
Manufacturer Pro2A Tactical
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