Pro2A 8.5" 40 S&W NR Side Charging Upper with Flash Can | AR-40

PRO2A 8.5" 40 S&W 1/16 Pistol Caliber NR Side Charging Melonite M-LOK Upper with Flash Can

Description

The Pro2A Tactical 8.5-inch .40 S&W Non-Reciprocating (NR) Side Charging Complete Upper Receiver assembly featuring an integrated linear Flash Can maximizes raw ballistic velocity and exceptional blast mitigation on a highly portable frame. Hand-assembled and quality verified in Georgia, this premier system replaces the traditional rear charging handle with an advanced, static side-charger mechanism. Paired with a linear flash can that pushes the substantial concussive force of standard defensive and training loads downrange, this drop-in setup offers an ultra-clean, tucked aesthetic built for close-quarters handling, personal defense layouts, or home security setups.

Key Features

Non-Reciprocating Control: Features a side-charging layout with a handle that remains entirely static while cycling, preventing optic mount interference and maximizing mechanical leverage.
Forward Concussion Redirection: Outfitted with a slimline aluminum linear Flash Can muzzle device that channels loud noise, flash, and concussive pressure away from the operator.
Optimized 8.5" Ballistic Run: Maximizes the powder burn efficiency of the .40 S&W cartridge to unlock higher velocity thresholds while retaining compact weapon control.
Aggressive Tucked Design: The linear flash can sits partially shrouded beneath the free-floating M-LOK rail system, maximizing rail accessory space while establishing a flush profile.

Technical Specifications

Upper Receiver	Gibbz Arms G9 Billet Aluminum M4 Flat Top Side Charging Receiver, Ejection Port Optimized for Pistol Calibers, Enhanced Feed Cone (Type III Hardcoat Anodized)
Charging System	Left-Side Non-Reciprocating Charging System (Static Handle Design)
Barrel Length & Profile	8.5-Inch Medium Profile
Caliber	.40 S&W (Smith & Wesson)
Twist Rate	1:16 Twist
Barrel Material	4150 Chrome Moly Vanadium Steel with Premium Corrosion-Resistant Melonite Finish
Gas System Length	Not Needed - Straight Blowback Operation
Handguard	10 Inch Free Float Slim Profile M-LOK Rail System with Integrated Top Picatinny Rail
Muzzle Thread & Device	9/16x24 Thread Pitch with Standard Slim Line Aluminum Flash Can

Why Choose This Product?

Building an 8.5-inch pistol caliber AR platform often introduces severe side-concussion and limited optics clearance. The Pro2A 8.5" .40 S&W NR Side Charging Upper with Flash Can solves these layout limitations entirely by pairing an advanced non-reciprocating handle with a forward-directing muzzle configuration. Built inside a tough billet receiver with a heavy-duty nitride bolt carrier group, it features an enhanced feed cone that reliably cycles flat-nose target rounds and high-expansion defensive ammunition alike. It is the premium drop-in evolution standard AR operators look for when outfitting a serious, compact .40 Smith & Wesson defensive build.