The Great Lakes Firearms AR-15 .450 Bushmaster is a purpose-built rifle for hunters who want serious stopping power in a modern, modular platform. Built on a 7075 billet lower receiver paired with a 416R stainless steel 18" barrel (1:24 twist), this rifle delivers the heavy-hitting performance of the .450 Bushmaster cartridge—a round designed for hunting large game at moderate ranges with authority. The Pursuit Green Camo Cerakote finish is as functional as it looks, providing corrosion resistance and a modern aesthetic that works in the field or at the range.
The 15.125" M-LOK handguard gives you plenty of real estate for mounting accessories—lights, lasers, or backup optics—without unnecessary length or weight. One included 5-round magazine keeps you topped off for hunting situations where precision and shot placement matter more than volume. This is a rifle that respects the capabilities and limitations of the .450 Bushmaster cartridge: potent, accurate, and manageable in a compact AR-15 form factor.
Whether you're a handloader looking to maximize the .450 Bushmaster's potential or a hunter transitioning from traditional platforms to the modularity of the AR system, this Great Lakes Firearms rifle delivers the quality and customization you'd expect from a serious builder. The stainless barrel and quality lower receiver mean this gun is built to last.
| Caliber | .450 Bushmaster |
| Barrel Length | 18" |
| Barrel Material | 416R Stainless Steel |
| Barrel Twist | 1:24 |
| Lower Receiver | 7075 Billet |
| Handguard | 15.125" M-LOK |
| Finish | Pursuit Green Camo Cerakote |
| Magazine Included | One 5-round magazine |
The .450 Bushmaster is a purpose-designed hunting cartridge for medium to large game at moderate distances. It delivers significant stopping power in the AR-15 platform and is particularly effective for hunters who want precision and authority without the recoil or logistics of full-power rifle cartridges.
No. The .450 Bushmaster requires its own dedicated magazines due to the cartridge's larger diameter. This rifle comes with one 5-round magazine; additional .450 Bushmaster magazines are widely available.
Yes. The 15.125" M-LOK handguard accepts standard M-LOK accessories for lights, vertical grips, and other rail-mounted gear. The rifle uses a standard AR-15 lower, so controls and furniture are interchangeable with other AR-platform rifles.
A 7075 billet lower is machined from a solid aluminum block, offering tight tolerances and a clean, finished appearance. This rifle's billet construction reflects quality machining and precision manufacturing.
Firearm Shipments:
To buy rifles or shotguns, you must be 18 years old, and for handguns, actions, or receivers, the minimum age is 21. By placing an order for this firearm, you confirm that you are the legitimate transferee/buyer, meet the legal age requirements, and comply with all Federal, State, and local laws and regulations necessary to purchase this firearm.
We only ship firearms to valid Federal Firearms License (FFL) holders. At checkout we provide a FFL locator for your convenience.
We will need a copy of the FFL’s license to facilitate the process, kindly request your dealer to email us a copy of their FFL, as we cannot dispatch the firearm until we receive this document. It is imperative for the buyer to choose their FFL dealer, ensure they are willing to facilitate the transfer, and have them email their FFL copy to BOSQUE Outdoors. To avoid any confusion, the customer's name or order number must be mentioned in the email containing the FFL.
Email: [email protected]
Great Lakes Firearms
Great Lakes Firearms
Great Lakes Firearms
Great Lakes Firearms
