Smith & Wesson M&P15 Sport III 5.56 NATO 16″ 30rd

Smith & Wesson M&P15 Sport III 5.56 NATO 16″ 30rd

$887.79

The Smith & Wesson M&P15 Sport III 5.56 NATO 16″ 30rd delivers a reliable, accurate AR-15 platform with a free-float M-LOK handguard, mid-length gas system, and includes a Crimson Trace CTS-106 red dot — ready to shoot right out of the box.

Available for delivery across the United States.

SKU: RSR|SW14207 Category:

Description

The Smith & Wesson M&P15 Sport III 5.56 NATO 16″ 30rd is a modern sporting rifle built for recreation, range training, and sport shooting. It comes as a complete bundle with a Crimson Trace CTS-106 red dot optic and a 30-round magazine, offering solid value straight out of the box. The platform uses a 16-inch 4140 steel barrel with Armornite finish and a mid-length gas system for reliable cycling with a wide range of ammunition.

Manufacturer Smith & Wesson
Model M&P15 Sport III
Material 7075-T6 aluminum receiver, 4140 steel barrel
Compatibility Accepts standard AR-15 magazines and aftermarket parts
Finish Armornite barrel finish, hardcoat anodized receiver
Weight 6.45 lbs (empty, per manufacturer specs)
Condition New

Key Features

  • Free-float M-LOK handguard — Allows you to mount lights, grips, or bipods without affecting barrel harmonics, improving accuracy potential.
  • 5R rifling — Reduces bullet deformation and copper fouling, helping maintain consistent velocity and tighter groups over long strings of fire.
  • Mid-length gas system — Smoother recoil impulse and reduced bolt carrier wear compared to carbine-length systems, especially with 5.56 NATO loads.
  • Crimson Trace CTS-106 red dot — Included in the bundle for fast target acquisition right out of the box, saving you $100+ on a separate optic.
  • Armornite barrel finish — Corrosion-resistant coating that also reduces glare, helping the barrel last longer under heavy use.

Who It’s For

This rifle is for the shooter who wants a reliable, no-nonsense AR-15 for the range, training classes, or home defense without spending a fortune. It suits first-time AR buyers looking for a complete package, as well as experienced shooters who appreciate a solid foundation for upgrades. If you value a free-float handguard and a quality optic included in the price, this is a smart pick.

Pros & Cons

  • Pro: Ready to shoot out of the box with a red dot and one magazine included.
  • Pro: Free-float M-LOK handguard and mid-length gas system enhance accuracy and reliability.
  • Pro: 5R rifling and Armornite finish reduce maintenance and extend barrel life.
  • Con: The included Crimson Trace CTS-106 is a basic red dot; serious competitors may prefer a higher-end optic for precision work.

Comparison

Feature Smith & Wesson M&P15 Sport III Zev Technologies OZ9 Geissele Super Duty
Barrel length 16″ 16″ 16″
Gas system Mid-length Mid-length Mid-length
Handguard Free-float M-LOK Free-float M-LOK Free-float M-LOK
Barrel steel 4140 416R stainless 4150 chrome-moly-vanadium
Bolt carrier Standard phosphate Nickel boron Phosphate with chrome lining
Optic included Crimson Trace CTS-106 None None
Price $792.67 $1,899 $1,699

According to Smith & Wesson specs, the Sport III’s 5R rifling reduces bullet friction, contributing to consistent accuracy with both 5.56 and .223 Remington ammunition. One honest drawback: the included red dot is not as robust as a standalone Aimpoint or Trijicon, but it works well for general range use.

FAQ

Does this rifle come with a case?

No, the Smith & Wesson M&P15 Sport III ships in a cardboard box with the rifle, one 30-round magazine, and the Crimson Trace CTS-106 red dot installed. A soft case is not included.

What is the twist rate of the barrel?

The barrel has a 1:8 twist rate, which stabilizes most 55- to 77-grain bullets well for target shooting and training.

Can I use .223 Remington ammunition in this rifle?

Yes, the M&P15 Sport III is chambered in 5.56 NATO and safely fires .223 Remington as well. Per Smith & Wesson, .223 Remington ammunition works, but accuracy may vary slightly.

Does the handguard have heat shields?

No, the free-float M-LOK handguard is aluminum and does not include separate heat shields, but the mid-length gas system helps keep the handguard cooler during sustained fire.

Is this rifle California-compliant?

No, this model ships with a standard 30-round magazine and standard features. For California, you would need a compliant version with a fixed magazine or other modifications.

✅ Nationwide delivery (all 50 states) — ships to your FFL dealer
✅ Ships 1-2 business days from order confirmation
✅ 30-day returns on unused items
✅ Secure checkout with encrypted payment

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Last updated: April 2026

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