PRO2A 10.5" .458 SOCOM Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper with Flash Can Kit

Product Overview

The PRO2A 10.5" .458 SOCOM Pistol Length NR Side Charging Melonite M-LOK AR-15 Upper with Flash Can Kit combines hard-hitting big-bore lethality with advanced close-quarters ergonomics. Built around a precision-engineered 10.5-inch 4150 CMV steel barrel, this package fully extracts the heavy terminal energy potential of the massive .458 SOCOM caliber within an incredibly agile intermediate footprint. Featuring a premium Non-Reciprocating (NR) side-charging handle for streamlined optic manipulation below specialized optics and paired with an integrated muzzle flash can to push heavy linear pressure downrange, this complete conversion package provides every required internal component to drop directly onto your chosen mil-spec lower framework.

Key Features

Ergonomic Non-Reciprocating Side Charger: Premium manual left-side charging handle stays stationary during live fire cycles, clearing critical workspace and preventing thumb/optic collisions.
Blast-Directing Linear Flash Can: Forces massive gas expansion, bright ignition signatures, and heavy concussive blast profiles straight forward to shield operators in confined brush environments.
Enlarged Ejection Port Receiver: Factory-modified and widened receiver framework specifically optimized to facilitate seamless feeding and unhindered shell extraction loops with heavy big-bore cases.
Rugged QPQ Melonite Barrel finish: Liquid nitride micro-hardening protects land-and-groove integrity, extending overall throat service life while delivering high corrosion defense.
All-In-One Assembly Package: Comes fully bundled with a specialized side-charging Bolt Carrier Group (BCG), an ergonomic free-float M-LOK handguard, a full lower parts kit matrix, and blade stabilization gear.

Technical Specifications

Caliber / Chamber:	.458 SOCOM
Barrel Length:	10.5 Inches
Barrel Material:	4150 Chrome Moly Vanadium Steel
Twist Rate:	1:14 Twist
Barrel Finish:	QPQ Melonite / Black Nitride Finish
Gas System Length:	Pistol-Length Gas System Layout with 0.750" Low Profile Gas Block
Receiver Construction:	Gibbz Arms G4 Billet Aluminum Non-Reciprocating Side Charging Upper Architecture with Enlarged Ejection Port, Gen 2 Handle (Type III Hardcoat Anodized)
Bolt Carrier Group (BCG):	Premium M16 Profile BCG with Properly Hooked .458 SOCOM Bolt Face, Nitride Finish, MPI Tested, properly enhanced for side-charging interaction
Muzzle Threads & Device:	5/8x24 TPI; Premium Slimline Muzzle Blast Flash Can
Handguard Interface:	12 inch Free-Float Ergonomic Slim M-LOK Rail System with Continuous Top Rail Layout
Lower Parts Kit (LPK):	Complete Mil-Spec Lower Parts Kit including crisp Single-Stage Fire Control Group (Trigger, Hammer, Springs), A2 Pistol Grip, and full pins/detent arrays
Blade Assembly:	Pistol Stabilizing Blade Assembly complete with Pistol Buffer Tube, Carbine Recoil 3oz Buffer, Spring, Castle Nut, and End Plate
Manufacturing Origin:	100% Made in the USA

Why Choose This Product?

This premium 10.5-inch .458 SOCOM conversion kit represents the ultimate close-quarters option for builders looking to maximize large-caliber impact from a highly maneuverable AR-15 platform. Shifting your manual charging loop to an ergonomic, non-reciprocating left side setup ensures operation remains lightning-fast and entirely unhindered by low-profile reflex sights or heavy magnification scope brackets. Meticulously tuned on a balanced pistol-length port and featuring an enlarged ejection port upper receiver to eliminate cyclic feeding bottlenecks, this comprehensive system offers true sub-MOA reliability, zero mechanical shell hang-ups, and field-tested structural resilience.