Description

The Smith Wesson M P10 Sport 308 Win is a 308 Winchester semi-automatic rifle on the larger AR pattern, built with 5R rifling, a mid-length gas system and fully ambidextrous controls, and left optics ready so you can choose your own sighting system.
Smith Wesson M P10 Sport 308 Win 308 in an AR Platform
The M&P10 takes the manual of arms almost every American shooter already knows and puts it around a full-power rifle cartridge. Controls, trigger, takedown and cleaning all work the same way an AR-15 does. What changes is the energy on target: 308 Winchester roughly doubles what 5.56 delivers and stays useful well past the range where a 5.56 has run out of authority.
The barrel uses 5R rifling with a 1 in 10 twist. 5R is a polygonal-influenced land profile that reduces bullet deformation and fouling compared with conventional cut rifling, and it is one of the reasons this rifle shoots better than its price suggests.
Armornite hardened nitride treatment covers both the inside and outside of the barrel, which improves corrosion resistance and wear resistance and makes cleaning noticeably easier.
Controls, Gas System and Furniture
The safety selector, magazine release and bolt release are all ambidextrous. On a full-size rifle that matters more than on a pistol, because shooters change shoulders around cover and left-handed shooters should not have to reach across the receiver.
A mid-length gas system is the right choice for a 16 inch 308. It gives the pressure curve more time to settle before the bolt unlocks, which means less violent extraction, a softer recoil impulse and longer parts life than a carbine-length system.
The gas block carries a Picatinny-style rail, there is a mid-length handguard, an A2 flash suppressor at the muzzle and a sling swivel fitted. The rifle ships optics ready, so budget for a scope or red dot and mounts.
What Armornite Actually Does
Armornite is Smith and Wesson name for a hardened nitride treatment applied to the barrel inside and out. Unlike a coating, nitriding changes the surface of the steel itself, so there is nothing to chip or flake off and nothing that adds thickness to the bore.
The practical benefits are three. Corrosion resistance improves substantially, which matters on a hunting rifle carried in rain and snow. Wear resistance improves, which extends throat life under sustained fire. And the surface becomes slick enough that carbon fouling comes out with far less scrubbing than a bare or chrome-lined bore demands.
None of that turns an ordinary barrel into a match barrel, but combined with 5R rifling it explains why this rifle tends to group better than its price point would suggest.
Specifications
- Manufacturer part number: 11532
- Caliber: 308 Winchester
- Capacity: 20 rounds
- Barrel: 16 in. with Armornite finish inside and out
- Rifling: 1 in 10 twist, 5R rifling
- Gas system: mid-length
- Gas block: with Picatinny-style rail
- Muzzle: A2 flash suppressor
- Handguard: mid-length
- Controls: ambidextrous safety selector, magazine release and bolt release
- Firing pin: chromed
- Sights: none fitted, optics ready
- Weight: 128.5 oz, roughly 8 lbs
- Height: 8 in.
- Width: 2.88 in.
- UPC: 022188869897
Why Buyers Choose the Smith Wesson M P10 Sport 308 Win
308 Winchester is the most widely available full-power rifle cartridge in North America, with ammunition on the shelf everywhere from match-grade to inexpensive practice loads.
5R rifling and a nitrided bore are features usually found further up the price list, and both contribute directly to accuracy and to how easy the rifle is to keep clean.
Ambidextrous controls throughout make this a rifle that works properly for left-handed shooters rather than one they have to adapt to.
A mid-length gas system on a 16 inch 308 is the detail that separates rifles that shoot pleasantly from rifles that beat their own parts. It softens recoil and extends service life.
Who Should Buy It
The Smith Wesson M P10 Sport 308 Win suits hunters wanting a semi-automatic 308 for deer, hogs and larger game, shooters who want more reach than 5.56 offers, and anyone who prefers the AR manual of arms in a bigger cartridge. Remember that the rifle ships without sights, so plan the optic into your budget.
Learn more from Smith and Wesson, or browse the rest of our firearms selection.
Every firearm we list ships to your chosen FFL and is transferred there after a background check.









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