PRO2A 5" 9mm 1/10 Pistol Caliber Melonite M-LOK Upper Kit | Pro2A Tactical

PRO2A 5" 9mm 1/10 Pistol Caliber Melonite M-LOK Upper Kit

Product Overview

The PRO2A 5" 9mm 1/10 Pistol Caliber Melonite M-LOK Upper Kit provides an all-in-one conversion package engineered to deliver ultimate micro-sized maneuverability for your AR-9 build. Centered around a premium 5-inch 4150 CMV steel barrel treated with a rugged Melonite finish, this complete system optimizes close-quarters operational efficiency and weapon retention while running the ubiquitous 9mm Luger cartridge. Arriving fully bundled with a ramped blowback bolt carrier group, dedicated lower parts tree, and a pistol stabilization buffer assembly, this comprehensive kit drops seamlessly onto your mil-spec lower framework configured with a 9mm adapter block or dedicated AR-9 lower receiver.

Key Features

Ultra-Compact Micro Footprint: The short 5-inch profile maximizes mobility, vehicle egress, and tactical retention inside highly confined defensive environments.
Rugged Melonite Barrel Armor: Liquid QPQ Nitride treatment yields an exceptionally hard, low-friction bore surface to ensure easy cleaning sequences and long-lasting throat longevity.
Optimal 1/10 Twist Rate: Precision-button rifling delivers uniform projectile stabilization tailored perfectly for both standard and heavy sub-sonic 9x19mm loads.
Reliable Direct Blowback BCG: Includes a premium, heavy-duty 9mm Bolt Carrier Group configured with a ramped profile to work flawlessly with standard mil-spec hammers.
All-In-One Conversion Bundle: Completely packages the finished upper assembly with a deep free-float M-LOK handguard, lower components matrix, and a stabilizing brace buffer kit.

Technical Specifications

Caliber / Chamber:	9mm Luger (9x19mm / Parabellum)
Barrel Length:	5 Inches
Barrel Material:	4150 Chrome Moly Vanadium Steel
Twist Rate:	1:10 Right-Hand Twist Button Rifled
Barrel Coating Finish:	QPQ Melonite / Black Nitride Finish
Operating System:	Direct Blowback Systems Configuration
Upper Receiver Type:	Billet Slick Side Aluminum, Ejection Port Sized for PCCs (Type III Hardcoat Anodized)
Bolt Carrier Group (BCG):	Premium Ramped 9mm Blowback BCG, Nitride Finish, MPI Tested, Glock & Colt Magazine Compatible
Muzzle Threads & Device:	1/2x28 TPI; A2 Flash Hider
Handguard Interface:	4 Inch Free-Float Ergonomic Ultra-Slim M-LOK Rail System with Continuous Top Picatinny Rail Layout
Lower Parts Kit (LPK):	Complete Mil-Spec Lower Parts Kit including Single-Stage Fire Control Group (Trigger, Hammer, Springs), A2 Pistol Grip, and full pins/detent arrays
Blade / Brace Assembly:	Pistol Stabilizing Blade/Brace complete with Dedicated 9mm 8oz Recoil Buffer, PCC Spring, Buffer Tube, Castle Nut, and End Plate
Manufacturing Origin:	100% Made in the USA

Why Choose This Product?

This premium micro kit provides modern builders with an elite intermediate-chassis solution that transitions seamlessly into a soft-shooting pistol caliber platform without cyclic guesswork. By supplying a precisely ramped 9mm blowback bolt group matched accurately to a tailored 9mm recoil buffer assembly, it effectively mitigates cycling harshness and ensures flawless feeding operations across multiple magazine patterns. Shipped complete with a robust Melonite-treated barrel and all necessary lower component parts, this kit offers sub-MOA close-range precision, ultra-agile handling comfort, and field-tested structural resilience.

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