Smith & Wesson M&P Sport III Fixed 5.56 NATO - AR-15 Rifle

The Smith & Wesson M&P Sport III Fixed 5.56 NATO delivers everything an AR-15 should — dependable 5.56 NATO function, quality construction, and straightforward ergonomics — without asking you to pay for features you don't need.

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

Consistent Cycling: The mid-length direct impingement system delivers consistent cycling across the standard 5.56 NATO ammunition spectrum without requiring frequent cleaning or special maintenance.

Versatile Configuration: With a 16" barrel and standard AR-15 ergonomics, this rifle fits the broadest possible range of users and use cases without compromise in any single area.

Upgrade-Friendly Platform: Everything on this AR-15 is standard — stocks, grips, handguards, triggers, and optic mounts can all be upgraded without specialized tools or gunsmithing knowledge.

Weather-Resistant Finish: The Type III Hardcoat Anodized finish provides lasting protection against corrosion and everyday wear — reliable function from the first range trip to the last.

• Caliber: 5.56 NATO
• Barrel Length: 16"
• Barrel Twist: 1:8"
• Gas System: Mid-Length Direct Impingement
• Handguard: M-Lok Free-Float
• Muzzle Threading: 1/2x28
• Magazine Capacity: 10-Round
• Finish: Type III Hardcoat Anodized
• Origin: Made in the USA

Drop-in compatible with mil-spec AR-15 lower receivers. Takes standard STANAG magazines chambered in 5.56 NATO and works with the full range of AR-15 accessories and aftermarket upgrades.

Type III Hardcoat Anodized over 7075-T6 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.

Covers the core use cases — home defense, range work, and recreational shooting — without specializing in any single role, making it a reliable all-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.