Great Lakes Firearms120915068
Great Lakes Firearms AR-15 .450 Bushmaster 18" FDE 5-Round Rifle$869.00
Availability: In Stock
The Great Lakes Firearms AR-15 .450 Bushmaster is a purpose-built rifle for hunters and shooters who want serious stopping power in a modern, modular platform. Built on a 7075 aluminum upper and lower receiver, this 18-inch rifle delivers the distinctive ballistics of .450 Bushmaster—a cartridge that's become a favorite for hunting medium to large game and for shooters seeking hard-hitting performance at intermediate distances. The FDE/SS finish combines a flat dark earth composite with stainless steel components for a clean, professional look that works in the field or at the range.
The 18-inch barrel is threaded 11/16 x 24 and comes dressed with a muzzle brake designed to be installed wrench-tight without Loctite—no special tools or adhesives required. The midlength gas system uses a 0.750 gas block and tube, tuned for the .450 Bushmaster cartridge. Modified M4 feed ramps and a mil-spec polymer grip keep the handling familiar for anyone versed in standard AR controls. The full-length Picatinny rail on the 15.25-inch aluminum handguard gives you unlimited mounting options for optics, lights, lasers, or other tactical accessories.
At just 6.4 pounds, this rifle balances naturally and doesn't fatigue you on a long hunt or range session. The magazine capacity is 5 rounds, with one magazine included in the box. The mil-spec trigger breaks at 5.5 to 6 pounds—a solid, predictable let-off for hunting and tactical applications. Overall length comes to 35 inches, making it compact enough for vehicle storage or navigating brush without losing the sight radius you need for accurate shooting.
| Caliber | .450 Bushmaster |
| Action | Semi-Automatic |
| Barrel Length | 18 inches |
| Barrel Twist | 1:24 |
| Barrel Material | 416R Stainless Steel or 4150 CRMOV Nitride (per production lot) |
| Muzzle | 11/16 x 24 threaded; muzzle brake included |
| Upper Receiver | 7075 Aluminum, oversized |
| Lower Receiver | 7075 Aluminum |
| Handguard | 15.25 inches, 6061 Aluminum, full Picatinny rail |
| Gas System | Midlength; 0.750 gas block |
| Feed Ramps | Modified M4 |
| Trigger | Mil-spec, 5.5–6 lb pull |
| Grip | Mil-spec Polymer |
| Magazine Capacity | 5 rounds |
| Magazines Included | 1 |
| Sights | None (optics-ready; Picatinny rail for mounting) |
| Finish | Cerakote FDE/SS |
| Overall Length | 35 inches |
| Weight | 6.4 pounds |
This rifle is chambered in .450 Bushmaster, a rifle cartridge that delivers substantial energy for hunting medium to large game at intermediate ranges. The 1:24 barrel twist is optimized to stabilize .450 Bushmaster projectiles for reliable accuracy.
Yes. The rifle ships without iron sights but features a full-length Picatinny rail on the handguard. You can mount any Picatinny-compatible optic, red dot, scope, or accessory directly to the rail.
The rifle comes with one 5-round magazine and a muzzle brake. The muzzle brake is already threaded to the barrel and can be installed or removed using a wrench without Loctite.
The .450 Bushmaster cartridge is used by hunters for medium to large game at intermediate distances. The compact 18-inch barrel and light 6.4-pound weight make the rifle maneuverable in the field, and the full Picatinny rail allows you to outfit it with the optics and accessories you need for hunting applications.
SKU: 120919636 • Weight: 9.42oz
Availability: In Stock
The Great Lakes Firearms AR-15 .450 Bushmaster is a purpose-built rifle for hunters and shooters who want serious stopping power in a modern, modular platform. Built on a 7075 aluminum upper and lower receiver, this 18-inch rifle delivers the distinctive ballistics of .450 Bushmaster—a cartridge that's become a favorite for hunting medium to large game and for shooters seeking hard-hitting performance at intermediate distances. The FDE/SS finish combines a flat dark earth composite with stainless steel components for a clean, professional look that works in the field or at the range.
The 18-inch barrel is threaded 11/16 x 24 and comes dressed with a muzzle brake designed to be installed wrench-tight without Loctite—no special tools or adhesives required. The midlength gas system uses a 0.750 gas block and tube, tuned for the .450 Bushmaster cartridge. Modified M4 feed ramps and a mil-spec polymer grip keep the handling familiar for anyone versed in standard AR controls. The full-length Picatinny rail on the 15.25-inch aluminum handguard gives you unlimited mounting options for optics, lights, lasers, or other tactical accessories.
At just 6.4 pounds, this rifle balances naturally and doesn't fatigue you on a long hunt or range session. The magazine capacity is 5 rounds, with one magazine included in the box. The mil-spec trigger breaks at 5.5 to 6 pounds—a solid, predictable let-off for hunting and tactical applications. Overall length comes to 35 inches, making it compact enough for vehicle storage or navigating brush without losing the sight radius you need for accurate shooting.
| Caliber | .450 Bushmaster |
| Action | Semi-Automatic |
| Barrel Length | 18 inches |
| Barrel Twist | 1:24 |
| Barrel Material | 416R Stainless Steel or 4150 CRMOV Nitride (per production lot) |
| Muzzle | 11/16 x 24 threaded; muzzle brake included |
| Upper Receiver | 7075 Aluminum, oversized |
| Lower Receiver | 7075 Aluminum |
| Handguard | 15.25 inches, 6061 Aluminum, full Picatinny rail |
| Gas System | Midlength; 0.750 gas block |
| Feed Ramps | Modified M4 |
| Trigger | Mil-spec, 5.5–6 lb pull |
| Grip | Mil-spec Polymer |
| Magazine Capacity | 5 rounds |
| Magazines Included | 1 |
| Sights | None (optics-ready; Picatinny rail for mounting) |
| Finish | Cerakote FDE/SS |
| Overall Length | 35 inches |
| Weight | 6.4 pounds |
This rifle is chambered in .450 Bushmaster, a rifle cartridge that delivers substantial energy for hunting medium to large game at intermediate ranges. The 1:24 barrel twist is optimized to stabilize .450 Bushmaster projectiles for reliable accuracy.
Yes. The rifle ships without iron sights but features a full-length Picatinny rail on the handguard. You can mount any Picatinny-compatible optic, red dot, scope, or accessory directly to the rail.
The rifle comes with one 5-round magazine and a muzzle brake. The muzzle brake is already threaded to the barrel and can be installed or removed using a wrench without Loctite.
The .450 Bushmaster cartridge is used by hunters for medium to large game at intermediate distances. The compact 18-inch barrel and light 6.4-pound weight make the rifle maneuverable in the field, and the full Picatinny rail allows you to outfit it with the optics and accessories you need for hunting applications.
SKU: 120919636 • Weight: 9.42oz