PRO2A 4.5" 22LR 1/16 Rimfire Melonite M-LOK AR-15 Upper

Product Description

Maximize your training efficiency, backyard plinking enjoyment, and cost-effective target practice on standard AR platforms. The PRO2A 4.5" 22LR Rimfire Upper Assembly is meticulously engineered to unlock dedicated .22 Long Rifle performance within an ultra-compact, highly maneuverable package. Unlike standard centerfire systems with conversion inserts, this setup uses a dedicated rimfire receiver layout and an exact-spec .22 LR barrel contour to deliver superior stabilization and accuracy. Built around a premium forged 7075-T6 aluminum receiver with a standard right-side ejection configuration, this system handles bulk rimfire ammunition flawlessly via a simple direct blowback action. The 1:16 twist rate is perfectly optimized to stabilize standard lead and copper-plated rimfire projectiles. A rigid free-floating M-LOK aluminum handguard encloses the short barrel to provide ample structural mounting estate for hand stops, weapon lights, or custom micro attachments.

Key Features

• Ultra-Compact Micro Footprint: Short 4.5-inch barrel structure creates an exceptionally lightweight and nimble rimfire platform, perfect for steel challenge matches, training new shooters, or running suppressed.
• Dedicated Rimfire Blowback Efficiency: Bypasses gas tubes and blocks entirely, using a reliable blowback bolt architecture that runs cooler and stays cleaner through heavy plinking sessions.
• Resilient Free-Float M-LOK Architecture: Premium slim profile aluminum rail isolates the barrel from external handling pressure vectors, ensuring continuous point-of-impact accuracy.
• Liquid Bath Nitride Hardening: The 4150 Chrome Moly Vanadium steel core features full interior and exterior QPQ Melonite coating to offer absolute weatherproofing and simple carbon cleanup.
• 10Source & Assembled in the USA: Sourced and built to tight manufacturing metrics in Georgia, backed completely by premium custom-shop engineering quality parameters.