16" 450 Bushmaster Complete Upper with 15" MHR
16" 450 Bushmaster Complete Upper with 15" MHR

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MSRP: $669.95

Stock Status:(Out of Stock)
Availability: OUT OF STOCK
Product Code: CFU16-450BUSH-15MHR


The Radical Firearms 16" Big Bore profile 450 Bushmaster is a complete MIL-STD upper ready to drop on any MIL-STD lower Receiver. Perfect for the novice or advanced shooter wanting to finish out that build and hit the range. Built with our 15" MHR free float rail system for increased accuracy and keeping your hands cool. No matter what your style of shooting is, Radical Firearms has you covered.

UPC: 816903027217
MFR#: RF00402

  • Barrel Length: 16"
  • Gas System: Mid Length
  • Barrel Profile: Big Bore Profile
  • Barrel Material: 4140 Chrome Moly Vanadium
  • Barrel Finish: Melonite
  • Muzzle Thread: 5/8x32
  • Chamber: 450 Bushmaster
  • Twist Rate: 1:20
  • Barrel Extension: Single Feed Ramp
  • Gas Block Type: .936 Low-profile Gas Block
  • Muzzle Device: Panzer Brake
  • Upper Receiver Material: Forged 7075 T6
  • Upper Receiver Style: M4 MIL-STD with Oversized Ejection Port
  • Upper Receiver Finish: Type III Anodizing
  • Forward Assist: Yes
  • Dust Cover: Yes
  • Handguard Type: Free Float
  • Handguard Style: M-Lok Hybrid Rail
  • Handguard Length: 15"
  • Charging Handle: MIL-STD
  • Bolt Carrier Group Included: Yes
  • BCG Finish: Nitride
  • Magazine: 450 7 Round
* Includes 1 Magazine

Average Rating: Average Rating: 4 of 5 4 of 5 Total Reviews: 1 Write a review »

  1 of 1 people found the following review helpful:
4 of 5 Almost perfect May 14, 2018
Reviewer: Cody from Iowa  
I’ve been a fan of radical firearms for awhile and when I wanted to get a .450 upper I was quick to turn to this option. You can not beat the price for the quality and feel. I had and went into knowing I might, have to deal with short stroking, and indeed the gas system was a bit under powered but was quickly resolved by opening the gas hole a bit more and adding an adjustable gas block. It now works perfect and I couldn’t be happier it. Even with a repair it still can’t beat the price.

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