Smith & Wesson M&P-10 .308 Win AR-10, 18-inch 5R 1:10 Threaded Barrel, Midwest Industries M-LOK Handguard, Ambidextrous Controls, 10+1
This Smith & Wesson M&P-10 in .308 Win stands out with an 18-inch 4140 steel barrel featuring 5R rifling and a 1:10 twist, paired with a mid-length gas system for smooth operation. It is configured with a Midwest Industries M-LOK free-float aluminum handguard and retains factory ambidextrous controls for the safety, magazine release, and bolt release. The flat-top upper is T-marked and includes a dust cover and brass deflector, with a low-profile gas block under the handguard and a three-prong flash hider at the muzzle.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Overall Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Light handling marks are present. Please refer to the photos for close-up views.
What’s Included
- Midwest Industries M-LOK free-float handguard (installed)
- 1x 10-round steel detachable box magazine
The 18-inch barrel is marked ".308 WIN 1/10 5R" and is threaded, capped with a three-prong flash hider. Its 4140 steel construction and 5R rifling provide a robust foundation in a practical length for the .308 Winchester chambering.
The rifle uses a direct impingement system with a mid-length gas setup and a low-profile gas block tucked beneath the free-float handguard. The Midwest Industries M-LOK handguard is aluminum with a full-length top rail, offering modern mounting flexibility while maintaining a rigid free-float configuration.
Factory receivers are 7075-T6 aluminum with a Type III hardcoat anodized finish. The flat-top upper has T-marked Picatinny rail sections and carries S&W markings. It includes a dust cover and brass deflector, and it is built without a forward assist as part of the model’s design.
Controls are fully ambidextrous, including the safety selector, magazine release, and bolt release. The rifle is equipped with a 6-position collapsible polymer stock and an A2-style polymer pistol grip. The bolt is 9310 steel. Capacity is 10+1, with one 10-round steel magazine included. Country of origin is the United States.