Great Lakes Firearms Ar-15 450Bm 18 Blk 5Rd

Great Lakes Firearms AR-15 .450 Bushmaster 18" Barrel 5-Round Rifle - Black

Great Lakes Firearms
SKU:
120915384
|
UPC:
702458691013
$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:
Black
Barrel Length:
18"
Barrel Length Range:
18" to 18.99"
Product Overview

The Great Lakes Firearms AR-15 .450 Bushmaster is a semi-automatic rifle built for hunters and shooters who want serious stopping power in a modern, modular platform. Chambered in .450 Bushmaster—a cartridge known for its hard-hitting performance on medium to large game—this 18-inch rifle strikes a balance between maneuverability and velocity. The 1:24 twist barrel stabilizes Bushmaster rounds reliably, while the 5-round magazine capacity keeps you ready for follow-up shots without excess bulk. Whether you're hunting hog, deer, or testing your skills at distance, this rifle delivers the accuracy and reliability you expect from an AR-pattern gun.

Built on a 7075 aluminum upper and lower receiver, this rifle is engineered for durability in demanding conditions. The 15.25-inch aluminum handguard features full picatinny rail coverage, giving you unlimited mounting options for optics, lights, or other tactical accessories. Mid-length gas tube and 0.750 gas block keep the system running smooth across a wide range of ammunition. A milspec 5.5–6 lb trigger gives you a predictable break, while the included muzzle brake helps manage recoil—welcome in a cartridge with .450 Bushmaster's punch. At 6.4 lbs unloaded, it's lightweight enough to carry all day but substantial enough to shoot confidently from the bench or in the field.

Great Lakes Firearms tops it off with a durable Cerakote finish and mil-spec polymer grip, designed to withstand hard use. The rifle ships with one 5-round magazine and a muzzle brake ready to install (wrench-tight without Loctite). No sights are included, leaving the optic choice entirely up to you—mount a low-power variable scope for hunting or a red dot for faster target work. This is a no-frills, purpose-built rifle for shooters who know what they want and value quality over hype.

Key Features

  • Semi-automatic AR-15 platform in .450 Bushmaster for powerful, effective medium to large game hunting
  • 18-inch barrel with 1:24 twist, threaded 11/16 × 24 for muzzle device compatibility
  • 7075 aluminum upper and lower receivers for strength and longevity
  • Full-length picatinny rail handguard (15.25 inches) for unlimited accessory mounting
  • Mid-length gas system with 0.750 gas block for reliable function and lower recoil impulse
  • Milspec 5.5–6 lb trigger with crisp, predictable break
  • Durable Cerakote finish resists corrosion and wear
  • Includes muzzle brake and one 5-round magazine out of the box
  • Lightweight at 6.4 lbs for all-day carry and field use

Specifications

Caliber.450 Bushmaster
ActionSemi-Automatic
Barrel Length18 inches
Barrel Twist1:24
Barrel Material416R Stainless Steel or 4150 CRMOV Nitride
Muzzle Thread11/16 × 24
Upper Receiver7075 Aluminum (Oversized)
Lower Receiver7075 Aluminum
Handguard15.25" Aluminum 6061, Full Picatinny Rail
Gas SystemMid-Length with 0.750" Gas Block
Feed RampsModified M4
Magazine Capacity5 Rounds
Magazines Included1 Magazine
TriggerMilspec, 5.5–6 lb pull
GripMil-Spec Polymer
SafetyRight-Hand Only
SightsNone Included
Muzzle BrakeIncluded
FinishCerakote
Overall Length35 inches
Weight6.4 lbs

Frequently Asked Questions

What is .450 Bushmaster, and what game can I hunt with it?

.450 Bushmaster is a hard-hitting straight-wall cartridge designed for hunting medium to large game. It's known for effective performance on deer, hog, and similar-sized game. It operates within the AR-15 platform, making it accessible to shooters already familiar with that rifle type.

Do I need to buy a scope or sights separately?

Yes. This rifle ships without sights. However, the 15.25-inch picatinny rail handguard and upper receiver give you plenty of real estate to mount any optic you choose—whether that's a low-power variable scope for hunting or a red dot for faster work.

What comes in the box?

The rifle includes one 5-round magazine and a muzzle brake ready to install. You'll need to source optics, ammunition, and any additional accessories separately.

Is this rifle ambidextrous?

No. The safety is right-hand only. Left-handed shooters should be aware of this before purchase.

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.