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Push the absolute boundaries of the ultra-compact personal defense weapon (PDW) footprint. The PRO2A 5" 5.56 NATO Micro Length Melonite M-LOK AR-15 Upper with Flash Can delivers a micro-sized barrel profile engineered specifically to tame short-barrel ballistic challenges. Featuring an incredibly fast, specialized 1:5 twist rate, this upper spins up projectiles rapidly to ensure mechanical stability out of an ultra-short bore. To mitigate the severe concussive blast inherent to sub-compact setups, a premium linear flash can muzzle device is integrated directly into the system, redirecting high-pressure energy downrange away from the operator. Natively mounts to any standard Mil-Spec AR-15 lower receiver configured as a registered short-barreled rifle (SBR) or pistol platform. Proudly 100% designed, machined, and precision-tested in the USA.
| Upper Receiver | Mil-Spec Forged 7075-T6 Aluminum, M4 Feed Ramps, Type III Hardcoat Anodized Black Finish (Forward Assist & Ejection Port Cover Pre-Installed) |
|---|---|
| Barrel Length & Steel | 5 Inch Micro Profile, 4150 Chrome Moly Vanadium Steel, Melonite Treated |
| Caliber | 5.56 NATO (Fully compatible with .223 Remington ammunition) |
| Twist Rate | Ultra-Fast 1:5 Twist (Optimized for short-barrel stabilization and immediate bullet rotation) |
| Gas Operating Block | Micro-Length System, Low-Profile Gas Block Machined from 4140 Steel, Stainless Steel Gas Tube |
| Muzzle Device | Standard 1/2-28 Thread Pitch, Slimline Linear Flash Can Pre-Installed |
| Handguard | 6.5 Inch Competition Top Free-Float M-LOK Rail, Slim Outer Profile, Machined from 6061-T6 Aluminum |
| Manufacturing Origin | 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty |
The PRO2A 5" 5.56 NATO Micro Length Upper with Flash Can directly addresses the two primary mechanical complications facing 5-inch AR builds: projectile instability and punishing blast concussion. Standard 1:7 or 1:9 twist rates cannot complete enough revolutions inside a 5-inch bore to stabilize a bullet, leading to severe keyholing and poor accuracy. Pro2A Tactical solves this by utilizing a specialized 1:5 fast twist rate, forcing immediate projectile stabilization right out of the chamber.
Additionally, firing 5.56 ammunition out of a sub-compact barrel typically yields a blinding flash and uncomfortable shockwaves. The integrated linear flash can channels that explosive expansion completely forward, protecting the operator when shooting inside confined spaces or covered ranges. Built to interface seamlessly with your preferred Mil-Spec bolt carrier group and backed entirely by Pro2A Tactical's signature Lifetime Factory Warranty, this upper provides ultimate concealable firepower without sacrificing mechanical reliability.
| SKU | P2A556AXC65MIC5CAN-HT |
|---|---|
| Barrel Length | 5 inch |
| Rifle Caliber | 5.56 NATO |
| Manufacturer | Pro2A Tactical |
