Smith & Wesson M&P15 Sport III 5.56 NATO 16" - AR-15 Rifle

A solid 5.56 NATO AR-15 without the fluff: the Smith & Wesson M&P15 Sport III 5.56 NATO 16" focuses on reliable function, practical configuration, and durable construction in a package ready to use straight from the box.

Built as a semi-automatic AR-15 rifle around 5.56 NATO and a mid-length direct impingement system, the Smith & Wesson M&P15 Sport III 5.56 NATO 16" delivers a proven AR-15 experience from first round to last.

Proven Gas System: Running a mid-length direct impingement system that has proven itself across millions of rounds in the field, this 5.56 NATO platform brings that reliability record to every range session and defensive use case.

Well-Balanced Profile: The 16" barrel and 15" M-LOK free-float handguard combination keep this rifle handy without sacrificing the sight radius and velocity that make the 5.56 NATO cartridge effective.

AR-15 Ecosystem Access: Standard AR-15 compatibility means accessories, replacement parts, and upgrade components are universally available — this rifle will never be an orphan platform.

Low-Maintenance Reliability: A quality finish and properly spec'd components reduce maintenance requirements without cutting corners on durability — more time shooting, less time cleaning.

• Caliber: 5.56 NATO
• Barrel Length: 16"
• Gas System: Mid-Length Direct Impingement
• Handguard: 15" M-Lok Free-Float
• Muzzle Threading: 1/2x28
• Magazine Capacity: 30 Round
• Finish: Type III Hardcoat Anodized
• Origin: Made in the USA

Fully compatible with standard AR-15 lower receivers and STANAG-pattern 5.56 NATO magazines. Works with mil-spec carbine buffer systems, standard lower parts kits, and the broad ecosystem of AR-15 aftermarket accessories.

Type III Hardcoat Anodized over 7075 aluminum construction gives this AR-15 rifle solid corrosion resistance and a durable surface that holds up across a wide range of storage and operating conditions.

Well-suited for home defense, recreational target shooting, and competitive carbine matches. A natural choice for shooters building a versatile general-purpose AR-15.

Smith and Wesson has been producing American firearms for over 170 years. The M&P15 series is backed by S&W's lifetime service policy and a track record of reliable performance in the field. Made in the USA.