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IA Iron River Armory

Smith & Wesson M&P15 Sport III 5.56 16″ Heavy Barrel (10rd)

SKUTSW|174168 Conditionnew CategoryAR Rifles
$837.77
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About this product

The Smith & Wesson M&P15 Sport III is a modern sporting rifle configured for responsible recreational and sport shooting. This bundle pairs the Sport III platform with a compact Crimson Trace CTS-106 red dot optic and a single 10-round magazine for state-compliant ownership where required. It features a 16-inch heavy barrel with 5R rifling and a free-floating M-LOK handguard for accessory mounting and modular setup.

Key Specifications

  • The rifle is chambered in .223 Rem / 5.56 NATO.
  • The barrel is a 16-inch heavy profile made from 4140 steel with an Armornite finish.
  • Rifling is a 1:8 twist, 5R profile.
  • The handguard is a free-floating 15-inch M-LOK design.
  • The gas system is a mid-length configuration.
  • The receiver is constructed from 7075-T6 aluminum.
  • The included optic is a Crimson Trace CTS-106 4.0 MOA red dot.
  • Includes one 10-round detachable magazine.
  • The rifle ships in a black finish and weighs approximately 6.5 lbs.
  • Designed as a modern sporting rifle platform suitable for range use, training, and sport shooting.

With a rugged 4140 steel heavy barrel, 5R rifling and a free-floating M-LOK handguard, the Sport III bundle offers a practical, accessory-ready platform straight from the factory. The included CTS-106 red dot gives quick target acquisition for range work and sport applications, while the mid-length gas system and proven receiver materials support consistent function. This configuration is well suited for shooters who value a dependable, configurable rifle that is ready to accessorize and perform in a variety of sporting and training roles.

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Specs at a glance

Smith & Wesson M&P15 Sport … SPECS AT A GLANCE 6.5 lbs WEIGHT
Editorial diagram — measurements verified during testing.
Sources & methodology. Editorial review and rating by Travis Caldwell based on hands-on testing notes and published vendor specifications. Pricing verified at time of publication.
$837.77