Home > AR-15 > AR-15 Upper Assemblies > 12.7x42 .50 Cal. AR-15 Complete Upper Assemblies
Sort By:
Page of 1
Radical Firearms 10.5" 12.7x42 Complete Upper Radical Firearms 16" 12.7x42 Complete Upper with FHR 10 rd 12.7x42/ 458 SOCOM Magazine
  • 10.5" 12.7 x 42 4140V Barrel With Melonite Coating
  • 1 in 20" Twist Rate
  • 49/64 x 20 TPI
  • 12.7 x 42 Chamber
  • HPT/MPI
  • Single Feed Ramp
  • .936" Gas Block
  • Stainless carbine-length gas tube
  • Direct Gas Impingement
  • Radical Firearms Panzer Brake
  • Radical Firearms FHR Hybrid Rail System
  • MIL-STD Forged Upper Receiver with RF Dimpled Forward Assist, Shell Deflector
  • Complete 12.7 BCG, Melonite Coated
  • MIL-STD Charging Handle
  • 16" 12.7 x 42 4140V Barrel With Melonite Coating

  • 1 in 20" Twist Rate

  • 49/64 x 20 TPI

  • 12.7 x 42 Chamber

  • HPT/MPI

  • Single Feed Ramp

  • .936" Gas Block

  • Stainless carbine-length gas tube

  • Direct Gas Impingement

  • Radical Firearms Panzer Brake

  • Radical Firearms 15" FHR Hybrid Rail System

  • MIL-STD Forged Upper Receiver with RF Dimpled Forward Assist, Shell Deflector

  • Complete 12.7 BCG, Melonite Coated

  • MIL-STD Charging Handle
    • High performance steel magazines.
    • Tested by special military forces and anti-terror units.
    • Fine resistance body coating, enduring up to 96 hours salt-spray test.
    • State-of-the-art anti-tilt self-levelingfollowers in several colors.
    • Improved reinforced floorplate