PRO2A 7.5" 45 ACP 1/16 Pistol Caliber Melonite M-LOK AR-15 Upper with Flash Can Kit

Product Description

Deploy heavy-hitting pistol caliber energy from an ultra-maneuverable platform with the complete PRO2A 7.5" 45 ACP Pistol Caliber Melonite M-LOK AR-15 Upper Kit with Flash Can. Purpose-built to optimize the heavy cross-sectional ballistics of the .45 Auto cartridge, this master build package delivers relentless blowback performance perfect for sub-gun configurations, personal defense, and compact close-range tactical use. The integrated slimline linear flash can successfully captures severe short-barrel concussion lines, pushing raw expansion gases directly downrange away from the shooter. As an all-in-one building matrix, this package comes completely populated with a specialized 45 ACP heavy blowback bolt carrier group, an enhanced charging handle, a full mil-spec lower parts kit, and a complete rear stock assembly—providing every required internal component needed to finalize your stripped lower receiver build.

Key Features

All-Inclusive Master Build Kit: Bundles the complete pistol caliber barreled upper receiver and linear flash can with a specialized 45 ACP bolt carrier group, charging handle, full lower parts kit, and rear receiver blade hardware.
Big-Bore PCC Performance: Specifically tuned for the 45 ACP cartridge to supply hard-hitting, low-velocity defensive fire with standard or heavy suppression-ready bullet grains.
Dedicated Blowback BCG Architecture: Features a high-mass blowback profile carrier machined to handle the specific dynamic requirements of pistol-caliber cycling with extreme feeding reliability.
Forward-Directed Flash Can: The integrated linear muzzle can routes aggressive muzzle blast expansion straight down the firing line, drastically elevating operator comfort on short-barrel systems.
QPQ Melonite Extreme Armor: Inside barrel bore, chamber throat, and exterior walls are fully liquid nitrocarburized to maximize surface hardness, improve thermal dissipation boundaries, and resist extreme environmental degradation.
Recessed M-LOK Handguard Layout: A continuous top Picatinny rail aligns flawlessly with a 9-inch lightweight free-floating M-LOK handguard that beautifully shrouds and recesses the flash can muzzle profile for a clean, streamlined "tucked" aesthetic.

Technical Specifications

Caliber / Chambering	45 ACP (Pistol Caliber Carbine)
Barrel Length / Steel	7.5 Inches / 4150 Chrome Moly Vanadium (CMV) Steel
Barrel Finish & Profile	QPQ Melonite / Black Nitride Finish (Internal & External) — Medium Profile
Twist Rate / Feed Ramps	1:16 Twist / Optimized Feed Cone
Gas System Length	Direct Blowback Mechanical System (No Gas Block Required)
Upper Receiver	Billet Aluminum, Mil-Spec M4 Slick-Side Profile (Optimized for Pistol Caliber Shell Clearing), Type III Hardcoat Anodized
Handguard System	9-Inch Ultra-Lightweight Free-Float 6061-T6 Aluminum Modular M-LOK Rail System (Recessed Shroud Layout)
Muzzle Configuration	Slimline Linear Flash Can (Concussive Diffuser Shroud) / 5/8x24 TPI Thread Pitch
Bolt Carrier Group (BCG)	Dedicated 45 ACP Blowback Profile BCG, Full-Auto Capable, Compatible with Glock or Colt Style Lower Configurations, Advanced Nitride Finished
Charging Handle	Standard Mil-Spec AR-15 Charging Handle
Lower Parts Kit (LPK)	Complete AR-15 Lower Parts Kit (Standard Mil-Spec Single-Stage Trigger Group, Pistol Grip, Detents, Springs, Pins, and Safety Selector)
Brace & Buffer Assembly	Adjustable Blade, Pistol Buffer Tube, Specially Weighted Heavy PCC 8oz Pistol Caliber Buffer, and High-Tensile PCC Buffer Spring
Manufacturing Origin	100% Designed, Machined, and Assembled in the United States
Warranty Protection	Backed by Pro2A Tactical's Structural Lifetime Warranty Plan

Why Choose This Product?

The PRO2A 7.5" 45 ACP Upper Kit with Flash Can removes the historical troubleshooting frustration of building a reliable pistol caliber carbine by providing a perfectly headspaced and heavy-mass-balanced mechanical system right out of the box. Short-barreled pistol-caliber builds require highly precise bolt and recoil spring weight balancing to ensure consistent extraction and primer strikes. This configuration handles those engineering limits flawlessly by matching an optimized blowback bolt carrier group with a specialized heavy PCC buffer structure. When combined with a custom linear flash can that drives severe short-barrel muzzle blast forward, it transforms a typically loud, concussive footprint into a clean, flat-shooting defensive environment. Fabricated completely in America to strict engineering tolerances and protected by a comprehensive Lifetime Structural Warranty, it stands out as an elite choice for your next heavy-hitting sub-gun configuration build expansion.