20" 450 Bushmaster Complete Upper with 15" MHR
20" 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: CFU20-450BUSH-15MHR


The Radical Firearms 20" 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: 816903027989
MFR#: RF00404

  • Barrel Length: 20"
  • 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

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