The Great Lakes GL10 in .300 Winchester Magnum is an AR-10 style modern sporting rifle built for serious range use and long-range field applications. Its combination of a 24-inch stainless steel barrel and a bronze Cerakote finish provides a durable platform intended for precision and repeatable performance.
Constructed with billet aluminum upper and lower receivers and a 20-inch aluminum M-LOK handguard with an upper Picatinny rail, the GL10 balances a familiar AR ergonomics package with heavy-barrel handling characteristics. The rifle ships with a Hogue fixed black synthetic stock and a 5-round detachable magazine, and it includes a stainless muzzle brake threaded 5/8 x 24.
Key Specifications
- The caliber is .300 Winchester Magnum.
- The barrel length is 24 inches.
- The rate of twist is 1:10.
- The action is Semi-Automatic.
- The magazine capacity is 5 rounds.
- The rifle uses a detachable magazine.
- The handguard is a 20-inch aluminum M-LOK with Picatinny rail.
- The barrel material is stainless steel (416R) and it includes a 5/8 x 24 stainless steel muzzle brake.
- The upper and lower receivers are aluminum billet (7075).
- The stock is a Hogue fixed black synthetic.
Buy the Great Lakes GL10 .300 Winchester Magnum online today for a factory-configured AR-style rifle built around the .300 Win Mag cartridge and a 24-inch stainless barrel.








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