The Standard Manufacturing SKO-12 (brand part no. SKOBLK) is a 12 gauge, gas-operated semi-auto shotgun built around AR-15 style ergonomics rather than a traditional shotgun stock. Standard Manufacturing engineered it as a fast-handling home-defense and range gun, pairing shotgun firepower with rifle-style manual of arms for shooters already familiar with the AR platform. Its 18.5-inch 4140 steel barrel is threaded to accept standard chokes, and the whole package is finished in matte black for a purposeful, no-frills look. Anyone who wants shotgun capability without relearning a manual of arms will feel at home behind this gun.

Key Specifications

• Chambered in 12 gauge, cycling 2-3/4-inch and 3-inch shells through a reliable gas system.
• The 18.5-inch 4140 steel barrel is threaded to accept standard choke tubes for pattern control.
• A 5-round detachable box magazine allows fast reloads compared to a fixed tube.
• The 6-position adjustable stock lets shooters dial in length of pull for any body size or gear setup.
• An AR-style pistol grip and rifle-type controls mean the safety, bolt release, and charging handle all sit where AR shooters already expect them.
• A 22-inch top rail gives plenty of real estate for a red dot, magnifier, or weapon light.
• The fore-end includes a Magpul MOE rail mounting point for adding lights, lasers, or a foregrip.
• Internal components carry a salt bath nitride finish for added corrosion resistance and smooth cycling.
• The upper and lower receivers are machined from 7075 aircraft-grade aluminum with a Mil-Spec hard-coat anodized finish for durability.
• Unloaded, it runs about 7 lbs 10 oz, keeping the AR-style shotgun maneuverable indoors and out.

Frequently Asked Questions

Does the SKO-12 use detachable magazines? Yes, it feeds from a 5-round detachable box magazine instead of a tube.

Will standard AR accessories fit? The 22-inch top rail and Magpul MOE-compatible fore-end mounting point accept common AR optics, lights, and grips.

Is the stock adjustable? Yes, the 6-position stock adjusts length of pull like a modern sporting rifle.

Buy the Standard Manufacturing SKO-12

For a shooter who wants a semi-auto shotgun that runs like an AR-15, the SKO-12 delivers familiar controls in a 12 gauge platform built by Standard Manufacturing. Order it from our Lubbock, Texas gun shop for fast, insured shipping to your FFL.