Great Lakes Firearms GL15 .400 Legend Semi-Auto Rifle 16″ Barrel 5-Round Black

The Great Lakes Firearms GL15 in .400 Legend is a purpose-built modern sporting rifle chambered for Winchester’s hard-hitting straight-wall cartridge — an ideal choice for hunters in straight-wall-only states and shooters who want serious terminal performance in an AR-15 platform. Built on a semi-automatic action with a 16-inch barrel and a 1:16″ rate of twist optimized for the .400 Legend, this rifle delivers the reliability and familiar ergonomics of the AR-15 in a caliber designed to punch well above its weight class.

Key Specifications

• The chambering is .400 Legend, a straight-wall cartridge engineered for hard-hitting performance and legal use in straight-wall hunting zones.
• The action is semi-automatic, built on the proven AR-15 platform.
• The barrel measures 16 inches in length for a compact, maneuverable profile.
• The rate of twist is 1:16″, optimized for .400 Legend projectiles.
• The magazine capacity is 5 rounds.
• The overall length is 41.75 inches.
• The finish is a bi-tone black configuration for a tactical, no-nonsense appearance.
• The ATF classification is a Modern Sporting Rifle.
• The manufacturer part number is GL15400SS-BLK.

Whether you’re heading into the deer woods in a straight-wall-cartridge state or looking to add a capable, hard-hitting AR to your collection, the Great Lakes Firearms GL15 in .400 Legend delivers the goods. It combines the intuitive handling and modularity of the AR-15 platform with a cartridge that offers a significant ballistic advantage over traditional straight-wall options — all in a ready-to-run package from a manufacturer focused on American shooters’ needs. Note: this firearm cannot be sold to Illinois residents per PICA regulations.