GLFA .450 Bushmaster Rifle (6 Colors Available)

Great Lakes Firearms and Ammunition, LLC

(7 reviews) Write a Review
Your build will begin within 10 days from the date your FFL copy is received (for FFL Transfers), or within 10 days from the date your order was placed (for local pickup). You will be notified via email when your order is shipped or ready for pickup.
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Product Overview


Action: Semi-Automatic

Ambidextrous Safety: No

Barrel: 18 inch, 1:24 Twist – Either 416R SS or 4150 CRMOV Nitride, 11/16 x 24 threads

Caliber: .450 Bushmaster

Feed Ramps: Modified M4

Finish: Cerakote

Frame Material: Aluminum 7075

Gas System: 0.750 Gas Block and Mid Length Gas Tube

Grip: Mil-spec, Polymer

Handguard: 15.25" Aluminum 6061 – Full picatinny rail

Magazine Capacity: 5 Round

Mags included: 1

Muzzle Brake: Included - Designed to be 6 degrees forward, wrench tightened w/o Loctite

Sights: None

Trigger: Milspec, 5.5-6 lb pull

Upper Receiver: 7075 Oversized Upper

Overall Length: 35.00”

Weight: 6.4 lbs


Due to federal regulations, complete firearms and lower receivers can only be shipped to Federal Firearms License (FFL) holders. If you purchase a firearm or lower receiver, we must receive a signed copy of an FFL before we can begin building your order. Please contact your FFL and have them email a copy of their signed license to as soon as you complete your purchase. Please make sure your name and GLFA order number are both included in the email.

***If your firearm or lower receiver is being shipped to CA, CO, CT, D.C., HI, IL, MD, MA, NJ, NY, VT, please contact us by phone or prior to making a purchase.

Warranty Information

GLFA Lifetime Warranty - See "Returns & Repairs" page for more details.


(7 reviews) Write a Review

7 Reviews Hide Reviews Show Reviews

  • 5

    Posted by Zach Powell on Mar 13th 2024

    One of the best rifles I own. Where I hunt I wanted something that has knockdown power, and accuracy out to 300+ yards. This rifle has both. Whether I’m hunting a field edge, or in the woods. This is my go to platform for deer in upstate New York.

  • 5
    Deer Slayer

    Posted by Aiden Leenstra on Nov 20th 2023

    Bought this gun 2 years ago. Have killed 9 deer with it, absolute tack driver. Have not had any issues with it cycling even in freezing conditions.

  • 5
    GLFA 450 Bushmaster

    Posted by Michael Renucci on Mar 23rd 2023

    Great weapon for Deer

  • 5
    .450 BM

    Posted by Ron Spangler on Jul 29th 2022

    I bought this gun a year ago. Love everything about it. TACK DRIVER!!!

  • 4
    .450 Bushmaster

    Posted by Jeffrey L Frischkorn on Feb 11th 2022

    I've used this rifle three times now on Florida feral hogs, including a 180 pound boar. It's been outfitted with a bullet drop-compensating optics intended for the cartridge. The one complaint I have is that the multi-position butt stock is ill fitting and offers a sloppy hold. A local gunsmith is going to replace it with a proper stock.

  • 5
    450 bushmaster

    Posted by David brode on Jan 15th 2022

    Had this gun for about a month now very smooth running gun. I put a vortex hog hunter 3x12x55 on it and it’s shooting just over a 2” group at 200yds At 100yds five shot group had almost every hole touching. Had a bit of an issue cycling the first couple rounds but that went away after a good cleaning

  • 4
    450 Bushmaster great quality

    Posted by Joshua Turner on Nov 29th 2021

    Light, tactical, good quality product. Kicks the same as a 30-06, good accuracy and penetration The only reason I took 1 star off, it is incredibly loud. Definitely have to wear a headset no matter the situation, makes home defense iffy.