Product Description

The PRO2A Left Hand 14.5" 5.56 NATO Mid Length Non-Reciprocating (NR) Side Charging Melonite M-LOK Upper Receiver Assembly brings top-tier mechanical ergonomics and streamlined legal compliance to left-handed operators. Built with a mirrored left-side ejection port to throw brass and combustion gases safely away from southpaw shooters, this billet upper receiver layout features a side charging handle that remains locked forward and completely stationary while firing. To maintain a handy, compact carbine stance 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 civilian threshold.

Key Features

• True Left-Hand Configuration: Mirrored left-ejection layout routes spent shells and high-pressure blowback completely clear of left-handed operators.
• Non-Reciprocating Side Charging Architecture: Ergonomic Right-side charging lever provides superior manual operation and clearing leverage while remaining entirely static during firing strings.
• Non-NFA Pin & Weld Solution: An extended muzzle profile is permanently fixed down using a seamless pin-and-weld process, ensuring a legal 16" overall length without tax stamp obligations.
• Smoother Mid-Length Gas Profile: Features an optimized gas port distance that reduces bolt carrier cyclic slide speeds, lowering port pop, minimizing heat buildup, and softening mechanical recoil spikes.
• 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

Why Choose This Product?

This premium 14.5-inch pinned and welded assembly delivers ultimate tactical handling customized for southpaw shooters. By moving the charging interface to the left side and deleting the rear latch, operators can cycle rounds or clear technical issues with an intuitive off-hand stroke without breaking their cheek weld or sight alignment. Balanced with a soft-cycling mid-length gas system configuration and a permanent legal-length muzzle extension, it provides left-handed home builders and professionals with a highly rugged, non-NFA restricted upper receiver built for hard field deployment.