The Great Lakes Firearms GL-15 is an AR-pattern semi-automatic rifle chambered in .400 Legend with a 16-inch stainless steel threaded barrel. It has a 5-round capacity, M-LOK handguard, and a Tungsten Cerakote finish on an aluminum receiver with Picatinny rail. The stock is a 6-position adjustable black synthetic. 
 

Key Specifications 

• Brand: Great Lakes Firearms 
• Model: GL-15 
• Caliber: .400 Legend 
• Action: Semi Auto 
• Capacity: 5 rounds 
• Barrel Length: 16 inches 
• Color/Finish: Tungsten Cerakote 
   

Detailed Features 

• 16-inch stainless steel threaded barrel 
• Tungsten Cerakote finish on aluminum receiver 
• M-LOK handguard for accessory attachment 
• 6-position adjustable black stock 
• Picatinny rail on upper receiver

Owners of the Great Lakes Firearms GL-15 in .400 Legend are typically drawn to the caliber first. The .400 Legend is a straight-wall cartridge suited to states with straight-wall hunting regulations, and buyers appreciate that the GL-15 packages it in a familiar AR platform. The stainless threaded barrel and Tungsten Cerakote finish are noted as above-average specs for the price tier.

The 5-round capacity reflects the hunting orientation of this build rather than a range-use configuration. Ergonomics are standard AR-15, so the learning curve is minimal for existing AR owners. The M-LOK handguard and Picatinny rail give enough mounting options for optics and accessories without being overbuilt.

Great Lakes Firearms is a smaller manufacturer and some buyers note that parts availability and aftermarket support are more limited than major brands. The GL-15 is generally viewed as a purpose-built hunting AR rather than a general-use rifle, and buyers who approach it that way tend to be satisfied with the quality of the execution.