Great Lakes Firearms and Ammo takes a great deal of pride in the precision craftsmanship they employ to produce firearms, ammunition, and components for shooting enthusiasts and the American sportsman. GLFA has established a fantastic reputation for manufacturing to the highest standards with only premium quality materials. Whether you're looking for hard to find ammunition or superb quality parts Great Lakes has what you need!

Convert your AR platform rifle into a hog eradicating machine with the GLFA .450 Bushmaster Complete Upper Receiver Assembly! Starting with an A3 flattop upper receiver that has M4 feed ramps, they added their 18" stainless steel .450 Bushmaster barrel with a GLFA Big Bore Muzzle Brake. It features a 15" freefloat Key-Mod compatible handguard and a NP3 coated BCG. Precision machining and production with superior Great Lakes standards ensure the highest quality and longest life from your new upper receiver.

Specifications and Features:
Great Lakes Firearms and Ammo LJ450BUSHSSK
AR-15 Complete Upper Receiver Assembly
.450 Bushmaster
18" Stainless Steel Barrel with 1:24 Twist
Threaded 11/16x24 TPI
GLFA Big Bore Stainless Steel Muzzle Brake
A3 Upper Receiver with M4 Feed Ramps
Direct Impingement Gas System
Low Profile Gas Block
NP3 Coated Bolt Carrier Group
15" Freefloat KeyMod Handguard
Black

Fits:
AR-15 Rifles