Great Lakes GLFA AR-15 450BM | 18 in | .450 Bushmaster

The Great Lakes GLFA AR-15 450BM is a semi-automatic rifle chambered in .450 Bushmaster built on a 7075 aluminum platform with a Cerakote ODG finish. It features an 18-inch barrel with a 1:24 twist and a 15.25-inch full-length Picatinny handguard for accessory mounting. For optics under $1,000 that suit big-bore AR platforms, the Vortex Strike Eagle 1-6×24 offers a robust variable-power option for close-to-medium range work and quick target acquisition.

Applications: brush and close-range hunting for large game, and outdoors/off-trail stalking where a heavy-bore cartridge is preferred.

Product Specifications

• The caliber is .450 Bushmaster.
• The action is Semi-Automatic.
• The barrel measures 18 inches with a 1:24 twist and is threaded 11/16 x 24.
• The barrel material is reported as not specified due to conflicting entries in the source data.
• The finish is Cerakote in ODG.
• The frame and upper are made from 7075 aluminum with an oversized upper noted.
• The handguard is a 15.25 inch Aluminum 6061 full Picatinny rail.
• The gas system uses a 0.750 gas block and a mid-length gas tube.
• The rifle includes a muzzle brake that is designed to be 6 degrees forward and wrench tightened without Loctite.
• The magazine capacity is 5 rounds and 1 magazine is included.
• The grip is mil-spec polymer.
• The trigger is specified as Milspec, 5.5–6 lb pull.
• Sights are listed as none.
• The overall length is 35.00 inches and the weight is 6.4 lbs.
• The UPC is 702458690696.

The GLFA AR-15 450BM pairs a heavy-bore chambering with an AR-pattern ergonomics package, giving it a platform familiar to AR shooters while delivering the terminal performance of .450 Bushmaster. The long, full-length rail supports a wide range of optics and accessories, and the mid-length gas system helps tune recoil impulse for follow-up handling. This rifle is suited to users who prioritize a dependable, hunting-capable AR format for brush and close-range large-game work.