PRO2A 14.5" 5.56 NATO Mid Length NR Side Charging Upper Kit - Pinned & Welded

PRO2A 14.5" 5.56 NATO 1/7 Mid Length NR Side Charging Melonite M-LOK AR-15 Upper Kit - Pinned & Welded

Product Description

The PRO2A 14.5" 5.56 NATO Mid Length Non-Reciprocating (NR) Side Charging Melonite M-LOK Upper Kit - Pinned & Welded delivers a comprehensive, premium rifle construction package designed for ultimate ergonomics and streamlined legal compliance. Engineered on a precision-machined billet aluminum receiver, this system swaps the traditional rear latch for a left-side charging setup where the handle remains stationary during operation. To achieve a compact carbine footprint without NFA short-barreled rifle registration, an extended muzzle device is professionally pinned and welded to permanently bring the overall barrel length past the federal 16-inch threshold. Bundled with a specialized side-charging bolt carrier group, full lower completion parts, and an adjustable stock completion system, it supplies everything needed to transform a stripped lower receiver into an elite modern rifle.

Key Features

Non-Reciprocating Side Charging System: Rigid billet receiver features an ergonomic left-side handle that stays locked forward and completely static while firing strings to maintain sight alignment effortlessly.
Non-NFA Legal Pin & Weld Compliance: An extended muzzle profile is permanently attached using a seamless pin-and-weld technique, allowing for handy short-carbine handling while safely meeting legal length requirements.
Smoother Mid-Length Gas Profile: Implements an optimized gas-port distance to naturally lower slide velocities and system pressure spikes, minimizing parts wear and smoothing out overall rifle recoil patterns.
Complete Build Integration: Bundles your high-accuracy upper assembly, dedicated side-charging BCG, lower receiver completion parts, and an adjustable stock system into a singular, matched package.
Premium Melonite Structural Defense: Heavy-duty 4150 CMV steel is thoroughly liquid nitrided to secure supreme environmental corrosion resistance and a longer bore throat life.

Technical Specifications

Upper Receiver	Gibbz Arms G4 Billet Aluminum (Side Charging Architecture, Right-Hand Ejection Port)
Charging System	Non-Reciprocating Left-Side Side Charging System (Handle remains stationary while firing)
Bolt Carrier Group	Milspec M16 Full Auto Profile, QPQ Nitride/Melonite Treated, MPI Tested
Barrel Length	14.5-Inch Barrel (Permanently achieves 16-Inch Overall Length via Pinned & Welded muzzle extension)
Caliber	5.56 NATO (Safely accepts .223 Remington)
Twist Rate	1:7 Twist Rate
Barrel Material	4150 Chrome Moly Vanadium Steel with QPQ Melonite Nitride Finish
Gas System	Mid Length Direct Impingement with Low-Profile Gas Block
Handguard	12-Inch Free Float Slim Profile M-LOK Handguard Rail System
Muzzle Device	Extended A2 Flash Hider (Permanently Pinned and Welded / 1/2x28 Thread Base)
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?

This premium 14.5-inch pinned and welded complete kit updates traditional AR functionality into a high-leverage, ultra-ergonomic system. Deleting the rear charging handle allows operators to cycle rounds or clear technical issues with an intuitive off-hand stroke without ever losing their sight picture or cheek weld on massive optics. Balanced with a soft-cycling mid-length gas layout, permanent non-NFA legal length compliance, full lower completion hardware, and a rugged buffer assembly, it provides home builders with a streamlined, zero-compromise pathway to an elite field rifle built for long-term operational longevity.

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