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Dominating close-quarters performance while mitigating blast overpressure, the PRO2A 7.5" 300 Blackout Pistol Length Melonite M-LOK Upper with Flash Can is engineered for ultimate maneuverability. This 100% American-made complete upper receiver assembly optimizes the powerful 300 AAC Blackout cartridge for short-barreled setups. Meticulously built on a mil-spec forged 7075-T6 aluminum receiver, it carries a heavy-duty 4150 CMV barrel and a smooth-cycling pistol gas line. Outfitted with an integrated linear flash can to focus concussive forces directly downrange, this premium, optics-ready assembly is available in versatile 1:7 or fast-stabilizing 1:5 twist rates, giving you a flawless foundation for your next compact AR pistol or SBR build.
| Upper Receiver | Mil-Spec Forged 7075-T6 Aluminum, M4 Feed Ramps, Forward Assist & Port Cover, Type III Hardcoat Anodized Black Finish |
|---|---|
| Barrel Length & Steel | 7.5 Inch Profile, 4150 Chrome Moly Vanadium Steel, Medium Contour, Melonite Treated |
| Caliber Configuration | 300 AAC Blackout (7.62x35mm) |
| Twist Rate Selection | 1:7 Twist or 1:5 Twist Rate |
| Gas Operating Block | Pistol-Length Gas System, Low-Profile Gas Block Machined from 4140 Steel, Stainless Steel Gas Tube |
| Muzzle Device Assembly | Slimline Linear Flash Can Blast Shield, 5/8x24 Thread Pitch |
| Handguard Structure | 9.5 Inch Slim Profile Free-Float Aluminum M-LOK Rail, Competition Top Picatinny Rail Alignment |
| Manufacturing Origin | 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty |
The PRO2A 7.5" 300 Blackout Upper Receiver with Flash Can solves the single biggest issue found in short-barrel weapon configurations: punishing, concussive side blast. Dropping a barrel to 7.5 inches usually creates massive lateral noise and fire, distracting the shooter and anyone else on the line. By enclosing the muzzle within a linear flash can, Pro2A Tactical redirects those high-pressure gases entirely forward. This design drastically raises shooter comfort, suppresses lateral flash signature, and makes close-quarters operations or indoor training blocks significantly cleaner and more manageable.
Furthermore, this upper gives you structural options to handle specialized ballistic needs. While the 1:7 twist is a tried-and-true standard for traditional loads, selecting the ultra-fast 1:5 twist profile completely transforms your platform's subsonic execution. Short 7.5-inch paths typically lack the length to spin long, heavy duty rounds safely, leading to keyholing or catastrophic baffle strikes inside suppressors. The 1:5 twist profile grabs heavy 220-grain projectiles instantly out of the chamber, driving them straight and true. Backed entirely by a Lifetime Factory Warranty and engineered with 100% American components, this upper assembly balances raw short-barrel power with absolute control.
| SKU | P2A300BLKAXC95PIS75MCAN-TK |
|---|---|
| Barrel Length | 7.5 inch |
| Rifle Caliber | 300 Blackout |
| Manufacturer | Pro2A Tactical |
