Used Smith & Wesson M&P15 Sport II S&W 5.56 NATO AR-15 AR15 16" M&P

Smith & Wesson M&P15 Sport II S&W AR-15 AR15 M&P

How Buying WorksEnding October 14, 2026 at 10:30 PM

Key Features

  • Item Type: Semi Auto Rifles
  • Action: AR-15 Direct Impingement
  • Manufacturer: Smith & Wesson (S&W)
  • Capacity: 30 1
  • Model: M&P15
  • Barrel Length: 16"
  • Caliber: 5.56mm NATO
  • Finish: Black
  • Overall Condition: Very Good

Product Description

    Smith & Wesson M&P15 Sport II 5.56 NATO Semi-Auto AR-15, 16 in Barrel, A2 Front Sight, 1:9 Twist, Matte Black

    The Smith & Wesson M&P15 Sport II is a well-maintained 5.56 NATO AR-15 with a 16-inch barrel, carbine-length gas system, and classic A2 sight configuration. It features a flat-top Picatinny upper with forward assist and ejection-port cover, a pinned A2 front sight base with bayonet lug, and a 1:9 twist rate. This example includes a polymer flip-up rear sight and a 30-round Magpul PMAG, all in a durable matte black finish and U.S.-made construction.

    Condition

    Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
    Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
    Bore Rifling: Excellent Rifling - Sharp lands and grooves.
    Specific Condition Notes: The firearm and bore have been maintained in excellent condition.

    What’s Included
    • Polymer flip-up rear sight (installed)
    • One 30-round Magpul PMAG polymer magazine

    Built on the AR-15 platform, the M&P15 Sport II uses a direct impingement operating system with a carbine-length gas setup. The upper receiver is a flat-top Picatinny design and includes a forward assist and ejection-port cover for added practicality. The aluminum-alloy receivers wear a uniform matte black finish.

    The 16-inch barrel is threaded and capped with an A2 birdcage flash suppressor. A pinned A2 front sight base with bayonet lug provides a robust front sighting reference, paired with the included polymer flip-up rear sight. The 1:9 twist rate supports a broad range of 5.56 NATO use cases.

    Furniture includes a carbine-length, two-piece polymer handguard and an A2-style pistol grip. The M4-style 6-position collapsible stock features a sling loop and provides an adjustable length of pull of approximately 10 to 13.5 inches, allowing a straightforward fit across different shooters and setups.

    This rifle accepts STANAG-pattern magazines and has a listed capacity of 30+1. A manual safety is provided. The package includes a 30-round Magpul PMAG, making it ready for range use with commonly available 5.56 NATO/223 Rem ammunition.

Specifications

Item TypeSemi Auto Rifles
ManufacturerSmith & Wesson (S&W)
ModelM&P15
SubmodelSport II
Caliber5.56mm NATO
Overall ConditionVery Good
Bore ConditionExcellent
ActionAR-15 Direct Impingement
Capacity30 1
Barrel Length16"
FinishBlack
Stock/GripsA2-style pistol grip
Sight/OpticA2 front sight with flip-up rear
Country of OriginUnited States