Product Description

The P2A HERO 7.5" 350 Legend 1/16 Pistol Length Melonite M-LOK Rifle (SBR) is a premium, professional-grade Short Barreled Rifle engineered to deliver the authoritative, hard-hitting terminal performance of the straight-wall 350 Legend cartridge in a remarkably compact and maneuverable package. As part of Pro2A Tactical's elite HERO line, this build steps far beyond our value-driven Patriot series, replacing standard forged receivers with a precision-machined 7075-T6 BILLET upper and lower receiver set featuring a beefed-up upper profile, a flared magwell for lightning-fast reloads, and an enhanced integrated trigger guard for gloved-hand operation. At its heart lies a 7.5-inch medium profile 4150 Chrome Moly Vanadium barrel with Melonite/Nitride treatment and a 1:16 twist, purpose-matched to stabilize the full spectrum of .357-diameter 350 Legend projectiles, from fast-expanding hunting loads to heavy subsonic rounds. A pistol-length direct impingement gas system with a stainless steel gas tube and 0.750" low-profile 4140 steel gas block delivers smooth, consistent cycling, while enlarged M4 feed ramps ensure the straight-walled case chambers flawlessly round after round. Wrapped in a 7-inch free-float M-LOK handguard and finished in durable Type III hardcoat anodized black, this SBR is built to dominate close-quarters defense, brush hunting, and range sessions alike.

Every HERO firearm is hand-assembled, inspected, and function-tested by our experienced armorers before it ships. From the exclusive Pro2A 3.5lb Milspec Curved Trigger to the PRO2A Milspec SOPMOD stock, every upgrade was selected to deliver a noticeably smoother, faster, and more confident shooting experience straight out of the box — no aftermarket parts hunting or gunsmithing required.

Key Features

• Premium 7075-T6 Billet Receivers: Precision CNC-machined from solid 7075-T6 billet aluminum rather than forged, the HERO upper and lower deliver tighter tolerances, a beefed-up upper profile for added rigidity, a flared magwell for fast and fluid reloads, and an enhanced integrated trigger guard for superior comfort and glove clearance.
• Exclusive Pro2A 3.5lb Milspec Curved Trigger: A crisp, light 3.5lb pull with a clean break and short reset gives you a dramatic accuracy and speed advantage over gritty standard milspec triggers, while retaining milspec reliability and drop-in fitment.
• Hard-Hitting 350 Legend Power: The straight-wall 350 Legend cartridge delivers devastating .357-caliber energy with mild recoil, making it legal in many straight-wall hunting states and ideal for deer, hogs, and home defense.
• 7.5" Melonite Barrel with 1:16 Twist: Medium profile 4150 CMV steel with Melonite/Nitride treatment provides exceptional hardness, corrosion resistance, and barrel life, while the 1:16 twist is perfectly matched to stabilize standard 350 Legend bullet weights.
• Enlarged Feed Ramp for Straight-Wall Reliability: Single large, enlarged M4 feed ramps are machined into the upper to guide the wider straight-wall case smoothly into the chamber, eliminating the feeding hiccups common in standard AR uppers.
• Pistol-Length DI Gas System: Stainless steel gas tube paired with a 0.750" low-profile 4140 steel gas block offers smooth, reliable cycling tuned for the short 7.5" barrel and a clean, low-profile look under the rail.
• 7" Free-Float M-LOK Handguard: 6061-T6 aluminum free-float rail with continuous top Picatinny provides a rock-solid optic platform and abundant M-LOK real estate for lights, lasers, and grips without affecting barrel harmonics.

Why Choose This Product?

The P2A HERO 7.5" 350 Legend SBR solves the biggest challenge of running a straight-wall cartridge in the AR-15 platform: reliable feeding and true premium build quality in a compact footprint. Standard uppers with conventional M4 ramps can hang up on the wide 350 Legend case, but the HERO's single large, enlarged feed ramps are machined specifically to guide straight-wall cartridges into the chamber smoothly every time. Pair that with a Tactical Kinetics 4150 CMV Melonite barrel and a perfectly matched 1:16 twist, and you get consistent, accurate shot placement with the bone-crushing .357-caliber energy that has made 350 Legend a favorite among hunters and home defenders across the country.

Unlike forged-receiver builds, the HERO's 7075-T6 billet upper and lower are precision-machined for tighter fit, enhanced rigidity, and a distinctive premium aesthetic. The flared magwell speeds reloads under pressure, the integrated trigger guard improves comfort, and the exclusive Pro2A 3.5lb Milspec Curved Trigger delivers a crisp, light pull that dramatically improves practical accuracy. As a true NFA Short Barreled Rifle, it pairs these upgrades with a PRO2A Milspec SOPMOD stock for stable shoulder-fired control that braced pistols simply cannot match. Backed by a nitride-treated MPI-tested BCG, a free-float M-LOK rail, and a lifetime warranty, it is a no-compromise compact powerhouse ready for the field, the range, or the home.

Partnering with some of the best manufacturers in the industry, we bring you our premium line of rifles and pistols, the “HERO”. Taking everything our customers love about the Patriot line and elevating it further, every HERO firearm features billet receivers, upgraded triggers, and premium furniture, carefully built and assembled by our team of experienced armorers who know the importance of reliability and repeatability. Every component is manufactured to milspec or better standards to ensure an exceptional firearm is produced. Whether it is for sporting, hunting, or defensive needs, the HERO line is ready to rise to any occasion. Because sometimes all you need is a Hero.