PRO2A 24" 6mm ARC 1/7.5 Rifle Length Melonite M-LOK AR-15 Upper Kit

Product Description

Maximize your velocity scaling, long-range wind resistance, and extreme downrange precision on standard AR platforms with a perfectly matched component ecosystem. The PRO2A 24" 6mm ARC Rifle Length Upper Kit supplies a complete, high-performance tactical upper receiver module bundled alongside a dedicated Type II bolt carrier group, a full lower parts kit, and an adjustable rifle stock assembly. Built around a premium-forged 7075-T6 aluminum receiver with standard right-side ejection configuration tolerances, this comprehensive builder package centers on a duty-grade 24-inch medium profile barrel. The engineered 1:7.5 twist rate ensures uniform gyroscopic stabilization for heavy, high-BC match projectiles across varied atmospheric thresholds. By delivering every critical internal and external mechanical component in a single, headspaced package, this kit eliminates assembly guesswork from your long-range precision build project.

Key Features

• Comprehensive Master Builder Bundle: Packed fully with a completely headspaced upper receiver, a dedicated 6mm ARC bolt carrier group, a premium lower parts kit, and an adjustable stock assembly to ensure a true turn-key workbench experience.
• Elite 24-Inch Precision Velocity: Elongated barrel structure burns intermediate powders completely, yielding a distinct muzzle velocity premium to optimize flat long-range trajectories.
• Premium Dedicated Type II BCG: Precision-engineered Type II bolt carrier group with optimized extractor and bolt face profiles to handle the unique case geometry and pressure metrics of the 6mm ARC cartridge.
• Complete Lower Parts Kit (LPK): Includes all standard tactical lower pins, detents, springs, an ergonomic pistol grip, and a crisp, mil-spec fire control group to fully finish out your lower receiver stripping requirements.
• Adjustable Stock Assembly: Outfitted with an impact-resistant polymer adjustable mil-spec M4 stock, matching carbine receiver extension buffer tube, quality buffer spring, and a carbine buffer to manage cycling impulses smoothly.
• Resilient Free-Float M-LOK Rail: Premium 15-inch slim profile aluminum rail isolates the barrel from external handling pressure vectors, ensuring continuous point-of-impact accuracy.
• Liquid Bath Nitride Protection: High-grade 4150 CMV steel components undergo full immersion QPQ Melonite processing, reinforcing structural surface hardness parameters against hot corrosive gases and prolonging bore precision.
• 100% Sourced & Assembled in the USA: Built to tight manufacturing metrics in Georgia, backed completely by premium custom-shop engineering quality parameters.

Why Choose This Product?

The 6mm ARC round delivers low drag coefficients and exceptional performance that rivals heavy short-action cartridges, fitting comfortably on the lighter AR-15 frame footprint. Buying an integrated kit eliminates common extraction or headspacing issues caused by mismatched aftermarket bolt faces and barrel extensions. This package loops an American-made, premium-headspaced barrel upper directly together with a verified bolt assembly, full internal parts, and an ergonomic adjustable stock. Pro2A Tactical offers a perfect, trouble-free upgrade path that delivers smooth functionality, low recoil impulse metrics, and absolute structural confidence directly to your custom build project.