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The P2A HERO 8.5" 300 Blackout 1/7 Pistol Length Melonite M-LOK Rifle (SBR) is a professional-grade Short Barreled Rifle custom-engineered from the ground up as a versatile, high-performance host for both subsonic and supersonic 300 Blackout loads. Chambered in the inherently short-barrel-optimized 300 AAC Blackout caliber, this legal NFA weapon platform replaces generic configurations with a premium architectural environment featuring billet 7075-T6 aluminum receivers, an 8.5-inch Melonite-treated barrel with a fast 1:7 twist, and a tuned pistol-length direct-impingement gas system. This combination delivers complete powder burn, excellent muzzle velocity, and reliable cycling while stabilizing a wide range of projectiles—from lightweight supersonic target loads to heavy 220gr subsonic defensive rounds—ensuring flight uniformity and consistent terminal performance. Finished in a premium hardcoat anodized protective shield, this build ensures long-term operational field preservation from environmental degradation.
The HERO line improves upon the Patriot series with additional features that enhance shootability and durability. Premium billet aluminum upper and lower receivers provide increased strength and a flared magwell for faster magazine changes, while the exclusive Pro2A 3.5lb curved trigger delivers a crisp break. Paired with a rigid adjustable carbine stock, free-float M-LOK handguard, and factory-tested components, this platform offers the reliability and performance expected from Pro2A Tactical in a compact SBR footprint ideal for home defense, vehicle readiness, and dynamic close-quarters use.
| Caliber | 300 Blackout (300 AAC Blackout / 7.62x35mm) |
|---|---|
| Barrel Length & Steel | 8.5 Inch Medium Profile, 4150 Chrome Moly Vanadium Steel, Melonite Treated – made for us by Hitman Industries |
| Twist Rate | 1:7 Twist (Optimized for heavy subsonic and/or supersonic loads) |
| Upper Receiver | Milspec Billet 7075-T6 Aluminum, M4 Feed Ramps, Forward Assist & Dust Cover, Type III Hardcoat Anodized Black |
| Lower Receiver | Mil-Spec Billet 7075-T6 Aluminum, Integrated Trigger Guard, Type III Hardcoat Anodized Black Finish |
| Gas Operating Block | Pistol-Length Gas System, Low-Profile Gas Block Machined from 4140 Steel, Stainless Steel Gas Tube |
| Muzzle Device | Standard 5/8-24 A2 Flash Hider (Suppressor Ready Threads) |
| Handguard Rail | 7" Slim Free-Float M-LOK Handguard, Machined from 6061-T6 Aluminum with Top Picatinny Rail |
| Bolt Carrier Group | Full Auto M16 Profile, 8620 Carrier, 9310 Bolt, Nitride Treated, Properly Staked Gas Key, MPI Tested |
| Charging Handle | Standard Milspec AR-15 Charging Handle |
| Lower Parts Kit | Exclusive PRO2A 3.5lb Crisp Pull Single-Stage Fire Control Group with Polished Trigger & Hammer, Standard Grip & Complete Mil-Spec Lower Parts |
| Stock Assembly | Upgraded PRO2A SOPMOD Stock, 6 Position Carbine Buffer Tube, Standard 3oz Buffer, Buffer Spring and Hardware |
| Magazine | (1) PMAG or Similar Compatible Magazine |
| Manufacturing Origin | 100% Made in the USA with Pro2A Tactical Lifetime Factory Warranty |
The P2A HERO 8.5" 300 Blackout SBR solves the common challenges of short-barreled 300 Blackout platforms by combining a proven 8.5-inch barrel length—widely regarded as a ballistic sweet spot for complete powder burn and maximum energy—with a fast 1:7 twist rate that reliably stabilizes both heavy subsonic defensive loads and lighter supersonic ammunition. Premium billet aluminum receivers provide enhanced durability and ergonomics over standard forged alternatives, while the exclusive 3.5lb trigger and free-float M-LOK handguard deliver improved control and modularity right out of the box.
As a true NFA Short Barreled Rifle with a rigid adjustable carbine stock, this platform eliminates the handling and stability compromises of braced pistols while retaining an ultra-compact footprint ideal for close-quarters, vehicle, and home-defense roles. Every HERO firearm is carefully assembled by experienced armorers using mil-spec or better components, subjected to stringent quality checks, and backed by a full lifetime warranty. Whether for sporting, hunting, defensive, or recreational use, the HERO line combines premium features with practical performance because sometimes all you need is a Hero.
Introducing our "Hero" series line of rifles and pistols. With feedback from professionals and customers, the Hero line improves upon the Patriot line with additional features that enhances shootability . Our rilfe caliber Hero line replaces the standard forged receivers with a premium set of Billet Aluminum receivers - made from quality 7075-T6 billet aluminum, the upper receiver is beefed up to enhance durability and ruggedness. The lower receiver has a flared magwell and enhanced trigger guard that will allow for faster magazine changes and makes shooting with gloves easier. Our HERO SBRs also comes standard with our exclusive Pro2A 3.5lb Milspec Curved Trigger and also comes standard with the popular SOPMOD stock. And just like our patriot line, every Hero firearm goes through a stringent series of checks/tests and is meticulously put together to ensure a high quality weapon is produced. The Hero line is suitable for all kinds of scenarios and has the reliability and performance you come to expect from Pro2A Tactical. Because sometimes all you need is a Hero.
| SKU | P2AHR-300BLKACT7PIS85-1.7-TK-SBR |
|---|---|
| Model | HERO |
| Barrel Length | 8.5 inch |
| Rifle Caliber | 300 Blackout |
| Manufacturer | Pro2A Tactical |
