Home > UPPERS > 458 SOCOM AR-15 Complete Upper Assemblies
All Big Bore Uppers come complete with:

  • MIL-STD Charging handle
  • Big Bore BCG
  • Big Bore Magazine
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Radical Firearms 16" 458 SOCOM Complete Upper with FHR Radical Firearms 16" 458 SOCOM Complete Upper with FHR

  • 16" 458 SOCOM 4140V Steel Barrel
  • 1 in 14" Twist Rate
  • 5/8x32 TPI
  • 458 SOCOM Chamber
  • Single Feed Ramp
  • .936" Micro Gas Block
  • Stainless carbine-length gas tube
  • Direct Gas Impingement
  • Radical Firearms Panzer 5/8x32 Brake
  • Radical Firearms 12" FHR Hybrid Rail System
  • Integrated Keymod attachment points on the sides and bottom with Picatinny Rails at the fore end for Mounting Lights, Lasers, Bipods & Sights
  • Custom Forged Upper Receiver with RF Dimpled Forward Assist, Shell Deflector, Dust Cover
  • Complete 458 SOCOM BCG, MPI, Melonite Coated, Staked
  • MIL-STD  Charging Handle

Regular Price: $589.95

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Radical Firearms 10.5" 458 SOCOM Complete Upper Radical Firearms 10.5" 458 SOCOM Complete Upper

  • 10.5" 458 SOCOM 4140V Barrel With Melonite Coating
  • 1 in 14" Twist Rate
  • 5/8x32 TPI
  • 458 SOCOM Chamber
  • 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 458 SOCOM, Melonite Coated
  • MIL-STD Charging Handle

Regular Price: $589.95

(3)
Radical Firearms 16" 458 SOCOM Complete Upper with FHR Radical Firearms 16" 458 SOCOM Complete Upper with FHR

  • 16" 458 SOCOM 4140V Steel Barrel
  • 1 in 14" Twist Rate
  • 5/8x32 TPI
  • 458 SOCOM Chamber
  • Single Feed Ramp
  • .936" Micro Gas Block
  • Stainless carbine-length gas tube
  • Direct Gas Impingement
  • Radical Firearms Panzer 5/8x32 Brake
  • Radical Firearms 15" FHR Hybrid Rail System
  • Integrated Keymod attachment points on the sides and bottom with Picatinny Rails at the fore end for Mounting Lights, Lasers, Bipods & Sights
  • Custom Forged Upper Receiver with RF Dimpled Forward Assist, Shell Deflector, Dust Cover
  • Complete 458 SOCOM BCG, MPI, Melonite Coated, Staked
  • MIL-STD  Charging Handle

Regular Price: $589.95

(2)
Radical Firearms 16" 458 SOCOM Complete Upper with MHR Radical Firearms 16" 458 SOCOM Complete Upper with MHR

  • 16" 458 SOCOM 4140V Steel Barrel
  • 1 in 14" Twist Rate
  • 5/8x32 TPI
  • 458 SOCOM Chamber
  • Single Feed Ramp
  • .936" Micro Gas Block
  • Stainless carbine-length gas tube
  • Direct Gas Impingement
  • Radical Firearms Panzer 5/8x32 Brake
  • Radical Firearms 15" MHR Hybrid Rail System
  • Integrated M-LOK attachment points on the sides and bottom with Picatinny Rails at the fore end for Mounting Lights, Lasers, Bipods & Sights
  • Custom Forged Upper Receiver with RF Dimpled Forward Assist, Shell Deflector, Dust Cover
  • Complete 458 SOCOM BCG, MPI, Melonite Coated, Staked
  • MIL-STD Charging Handle
  • 1 Big Bore Magazine
  • Regular Price: $589.95
    Radical Firearms 10.5" 458 SOCOM Complete Upper Radical Firearms 10.5" 458 SOCOM Complete Upper

    • 10.5" 458 SOCOM 4140V Barrel With Melonite Coating
    • 1 in 14" Twist Rate
    • 5/8x32 TPI
    • 458 SOCOM Chamber
    • Single Feed Ramp
    • .936" Gas Block
    • Stainless carbine-length gas tube
    • Direct Gas Impingement
    • Radical Firearms Panzer Brake
    • Radical Firearms 9" MHR Rail System
    • Integrated M-LOK attachment points on the sides and bottom with Picatinny Rails at the fore end for Mounting Lights, Lasers, Bipods & Sights
    • MIL-STD Forged Upper Receiver with RF Dimpled Forward Assist, Shell Deflector, Dust Cover
    • Complete 458 SOCOM, Melonite Coated
    • MIL-STD Charging Handle
    • Big Bore Magazine

    Regular Price: $589.95
    10 rd 12.7x42/ 458 SOCOM Magazine 10 rd 12.7x42/ 458 SOCOM Magazine

    • 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

    Regular Price: $40.00