Great Lakes Firearms Ar-15 450Bm 18 Fde/Ss 5Rd

Great Lakes Firearms AR-15 .450 Bushmaster 18" FDE/SS 5-Round Rifle

Great Lakes Firearms
SKU:
120919636
|
UPC:
702458691303
$869.00
$979.95
(You save $110.95 )
Current Stock:
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Product Specifications
Capacity-Rounds:
5
Caliber-Gauge:
450 Bushmaster
Finish-Color:
Flat Dark Earth
Barrel Length:
18"
Barrel Length Range:
18" to 18.99"
Product Overview

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.

Key Features

  • Chambered in .450 Bushmaster for hunters and shooters seeking intermediate-range power
  • 18-inch barrel with 1:24 twist stabilizes .450 projectiles for reliable accuracy
  • 7075 oversized upper and lower receivers for strength and durability
  • Full-length Picatinny rail handguard supports modern optics and accessories
  • 11/16 x 24 threaded muzzle brake included; installs without Loctite
  • Midlength gas system optimized for .450 Bushmaster ballistics
  • Compact 35-inch overall length; featherlight at 6.4 pounds
  • Mil-spec trigger and controls familiar to AR shooters
  • FDE/SS finish blends field-ready aesthetics with corrosion resistance

Specifications

Caliber.450 Bushmaster
ActionSemi-Automatic
Barrel Length18 inches
Barrel Twist1:24
Barrel Material416R Stainless Steel or 4150 CRMOV Nitride (per production lot)
Muzzle11/16 x 24 threaded; muzzle brake included
Upper Receiver7075 Aluminum, oversized
Lower Receiver7075 Aluminum
Handguard15.25 inches, 6061 Aluminum, full Picatinny rail
Gas SystemMidlength; 0.750 gas block
Feed RampsModified M4
TriggerMil-spec, 5.5–6 lb pull
GripMil-spec Polymer
Magazine Capacity5 rounds
Magazines Included1
SightsNone (optics-ready; Picatinny rail for mounting)
FinishCerakote FDE/SS
Overall Length35 inches
Weight6.4 pounds

Frequently Asked Questions

What ammunition does the Great Lakes .450 Bushmaster AR-15 use?

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.

Can I mount an optic or scope on this rifle?

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.

What's included in the box?

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.

Is this rifle suitable for hunting?

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.

Additional Information

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]

  • Prior to placing an order, it is the buyer's responsibility to understand and adhere to their state's firearm regulations.
  • The buyer should verify with their receiving dealer that the chosen firearm is legally permissible in their state.
  • The buyer is accountable for any transfer fees or background check charges imposed by the receiving dealer. If the designated dealer declines to accept the firearm delivery, the buyer assumes responsibility for shipping costs to retrieve the firearm and resend it to an accommodating dealer.
  • Handguns will be shipped using air transportation, while long guns can be shipped using ground methods. If your order includes a mix of firearm and non-firearm items, BOSQUE Outdoors will send the firearm(s) to your selected FFL dealer and the remaining non-firearm items to your billing address.
  • Firearms cannot be returned to BOSQUE Outdoors; please contact the manufacturer for warranty claims.
  • Firearms refused by the FFL Dealer or which cannot be transferred due to a failed background check are subject to a $75 restocking fee plus 10% of the purchase price.