Smith & Wesson M&P-15 Sport II 5.56 NATO AR-15 Rifle — Mid-Length Gas, Threaded Armornite 5R Barrel, 15 in Free-Float M-LOK Rail, Flip-Up Sights
This Smith & Wesson M&P-15 Sport II stands out with a mid-length gas system, a threaded Armornite-treated barrel featuring 5R rifling and a 1:8 twist, and a 15-inch free-float M-LOK aluminum handguard with a continuous top rail. Forged aluminum receivers with hard-anodized finish, forward assist, ejection-port cover, and case deflector round out a well-equipped, U.S.-made rifle in excellent condition. This example includes polymer flip-up sights, while the Sport II series typically ships without sights.
The flat-top upper is T-marked and S&W branded (T4–T12), providing clear reference points along the 12 o'clock Picatinny rail. The lower receiver features an integral trigger guard, and the carbine-length receiver extension supports a 6-position M4-style collapsible stock. An A2-pattern birdcage flash hider is installed at the threaded muzzle, and controls include a manual safety with an A2-style pistol grip. The receiver is marked "SMITH & WESSON SPRINGFIELD, MA MADE IN U.S.A."
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
What's Included
- Smith & Wesson M&P-15 Sport II 5.56 NATO semi-automatic rifle
- Polymer flip-up front sight
- Polymer flip-up rear sight
The Sport II configuration uses a mid-length gas system paired with a direct-impingement, rotating-bolt action. This setup is matched to a forged aluminum receiver set with hard-anodized finish, forward assist, ejection-port cover, and case deflector.
The barrel is threaded and Armornite-treated with 5R rifling and a 1:8 twist, capped by an A2-pattern birdcage flash hider. This combination supports a wide range of 5.56 NATO bullet weights and provides durable surface protection.
A 15-inch free-float M-LOK aluminum handguard delivers ample accessory mounting along the sides and bottom, while a continuous 12 o'clock Picatinny rail aligns seamlessly with the T-marked flat-top upper (T4–T12) for consistent reference points.
Furniture includes a 6-position M4-style collapsible stock on a carbine-length receiver extension and an A2-style pistol grip. A manual safety is standard, and this rifle comes outfitted with polymer flip-up front and rear sights.