Smith & Wesson M&P Sport III | 5.56 Nato | 15" MLOK | 30rd AR-15 Rifle

Smith & Wesson M&P15 Sport III 5.56 NATO Rifle (MPN: 13807)

The Smith & Wesson M&P15 Sport III (MPN: 13807) is the latest evolution of one of the most trusted modern sporting rifles in the world. Building on the legendary reliability of the Sport II, the Sport III introduces key factory upgrades designed to enhance performance, modularity, and accuracy right out of the box. Chambered in 5.56 NATO, this rifle is the perfect foundation for home defense, duty use, or tactical training.

Enhanced Versatility with M-LOK Handguard

The most significant upgrade on the Sport III is the 15-inch free-float M-LOK® handguard. This full-length rail provides an expansive mounting surface for lights, lasers, and vertical grips while allowing the barrel to vibrate naturally for superior accuracy. A continuous Picatinny top rail seamlessly connects the upper receiver to the handguard, offering nearly 20 inches of rail space for your choice of red dots, scopes, or iron sights.

Rugged Reliability & Proven Components

At its core, the Sport III features a 16-inch barrel with a versatile 1:8" twist rate, allowing it to stabilize a wide range of projectile weights from 55gr plinking ammo to 77gr duty loads. The barrel is finished with a durable Armornite® coating for superior corrosion resistance and features a standard A2 flash hider. The forged 7075-T6 aluminum receivers ensure a lightweight yet incredibly strong chassis that can withstand high-cadence firing.

Key Features & Benefits

• Free-Float M-LOK Rail: Increases accuracy and provides ample space for modern tactical accessories.

• Mid-Length Gas System: Offers a smoother recoil impulse and reduced wear on internal components compared to carbine-length systems.

• 1:8 Twist Barrel: Optimized for the most popular 5.56 NATO and .223 Rem bullet weights.

• Armornite® Finish: Provides a hardened, corrosion-resistant surface inside and out for long-term durability.

• 6-Position Adjustable Stock: Allows the shooter to customize the length of pull for different gear or body sizes

The S&W M&P15 Sport III represents the new gold standard for entry-level to mid-tier AR-15s. By including a mid-length gas system and a free-float M-LOK handguard as factory standards, Smith & Wesson has eliminated the need for immediate aftermarket upgrades. If you want a rifle that is ready for a professional optic and a weapon light the moment it leaves the box, the Sport III is the clear winner.