Smith & Wesson M&P15 Sport III 5.56 NATO 16 in 10rd

The Smith & Wesson M&P15 Sport III is a semi-automatic modern sporting rifle chambered for .223 Rem/5.56 NATO. It is built on a 7075 aluminum receiver with a full-length Picatinny rail and a 15 inch free-float M-LOK handguard for accessory mounting. The rifle uses a 16 inch heavy 4140 steel barrel with a 1:8 twist and 5R rifling and operates on a mid-length gas system. A fixed black synthetic stock, polymer grip, and one 10-round magazine are included with the rifle.

Key Specifications

• The caliber is .223 Rem/5.56 NATO.
• The barrel measures 16 inches and is described as heavy with a 4140 steel construction.
• The rifling rate is 1:8 (5R) twist for broader ammunition compatibility.
• The action is semi-automatic.
• The magazine capacity is 10 rounds and one magazine is included.
• The handguard is a 15 inch free-float M-LOK with a full-length Picatinny rail.
• The receiver is made from 7075 aluminum.
• The stock is a fixed black synthetic design and the grip material is polymer.
• The gas system is mid-length to help manage felt recoil.
• The overall weight is approximately 6.5 lbs and overall length is 35 inches.

Configured for range work and sport shooting, the M&P15 Sport III delivers a configuration that is ready for optics and accessories while maintaining the familiar ergonomics and controls of the platform. Its free‑float M-LOK handguard and mid-length gas system make it a practical base for customization, training, and regular range use.

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