Great Lakes Firearms GL10LA300SSBRZ AR10 300 Win Mag
Precision AR10 platform rifle in 300 Win Mag with 24" stainless steel barrel, bronze Cerakote finish, and Hogue synthetic stock. Features 5R rifling, M-LOK handguard, and included muzzle brake.
A Serious Long-Range Performer
The Great Lakes Firearms GL10LA300SSBRZ represents a thoughtful approach to AR10 rifle design, built around the proven .300 Winchester Magnum cartridge. This is a rifle engineered for shooters who demand accuracy and reliability at extended distances.
Barrel and Accuracy Features
The barrel is the foundation of any precision rifle. Great Lakes Firearms employs 5R rifling—a design that reduces bullet deformation and improves accuracy. The barrel undergoes double thermal stress-relief and air-gauging to ensure consistency. At 24 inches, the heavy profile barrel provides the rigidity necessary for precision shooting while the 1:10 twist rate optimally stabilizes .300 Win Mag projectiles.
The threaded muzzle accepts standard suppressors or muzzle devices. A muzzle brake is included.
Ergonomic and Modular Design
- Aluminum receiver keeps weight manageable while maintaining strength
- M-LOK handguard provides modern accessory mounting flexibility
- Picatinny rail for optic mounting
- Mil-spec trigger and grip ensure familiar controls
- Hogue fixed synthetic stock offers a comfortable, durable platform
- Rifle-length gas tube for reliable operation
The Bottom Line
This is a rifle built for hunters and long-range shooters who understand that precision matters. The .300 Win Mag delivers the velocity and energy needed for serious hunting applications, while the attention to barrel quality and thermal management supports the accuracy required to make ethical shots at distance.
