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Questions & Answers
Can I mount this upper receiver on my 556 lower? Expert Answer

Yes, you can.

by Jonathan D., Gear Expert, March 24, 2020
Will a standard buffer spring work with this upper. Expert Answer

Yes, the .450 Bushmaster AR uppers were designed with the standard AR-15 lower receiver in mind, so it should work with the standard spring and buffer.

by Ethan C., Gear Expert, July 10, 2018
Customer Reviews
Helpful Positive Review
Glfa 450 bushmaster upper by Deer hunter, March 13, 2018
The Great Lakes firearms and ammunition.450 bushmaster upper is very good quality for the price. Shoots very nice with very little recoil. The upper fit nicely on multiple lowers I have. The muzzle break does a good job or recoil management.
2/2 found this helpful
Most Recent Reviews
Good shooting by Schin525, December 21, 2017
Bought this and put it on my Anderson Lower. Didn't make any changes and it shot well. I've only run about 15 rounds through it to sight it in. I have a red dot on it and it's shoots better than I can off hand.
Read All 2 Reviews
Caliber:
.450 Bushmaster
Finish:
Matte
Color:
Black
Fabric/Material:
Aluminum/Steel
Gun Model:
AR-15

Code: 2AE-URC-LJ450BUSH

MPN: LJ450BUSH

UPC: 702458689829

Product No Longer Available

Product Info for GLFA AR-15 Complete Upper .450 Bushmaster 18in, NP3

Leading the way in top-notch precision shooting the GLFA AR-15 .450 Bushmaster Complete Upper will take your modification to the next level. These AR15 Upper Receivers from the trendsetters at GLFA feature an A3 flattop upper receiver that provides M4 feed ramps for better control when shooting. Thanks to premium quality materials like the 18in chrome moly barrel the GLFA AR-15 18in Complete Upper Receiver is precision machined to be the very best. Get a longer life out of your upper receiver and the highest in quality with superb parts. Eradicate hogs, boars, and other varmints with the top-of-the-line GLFA AR-15 NP3 Complete Upper Assembly.image

Features of GLFA AR-15 .450 Bushmaster Complete Upper, 2AE-URC-LJ450BUSH

  • Caliber: .450 Bushmaster
  • 18in Chrome Moly Barrel
  • 1:24in Twist
  • A3 upper w/M4 feed ramps
  • 15in floating MLOCK handguard
  • GLFA big bore muzzle brake
  • Aluminum/Steel
  • AR 15 Accessories Y
  • Caliber: .450 Bushmaster
  • Other Features: A3 Upper With M4 Feeed Ramps, 11/16in X 24in Muzzle Threads, 15in M-LOK Handguard, Glfa Big Bore Muzzlebrake
  • Barrel Finish: Nitride
  • Barrel Length: 18in
  • Barrel Material: 4150 CMV Steel
  • Rate Of Twist: 1:24in

Package Contents:

  • GLFA AR-15 Complete Upper .450 Bushmaster 18in, NP3, 2AE-URC-LJ450BUSH

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Related Products to GLFA AR-15 Complete Upper .450 Bushmaster 18in, NP3

GLFA AR-15 Complete Upper .450 Bushmaster 18in, NP3 Unavailable & Discontinued Models

List of Unorderable Models

  • Glfa Ar-15 Complete Upper .450 Bushmaster 18'' Np3 Black , MPN: LJ450BUSH , UPC: 702458689829 , Code: 2AE-URC-LJ450BUSH
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