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

  • MIL-STD Charging handle
  • Big Bore BCG
  • Big Bore Magazine
Sort By:
Page of 1
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
  • MSRP: $589.95
    RF 10.5" 458 SOCOM Complete Upper with 9" MHR RF 10.5" 458 SOCOM Complete Upper with 9" MHR

    SKU: CFU10.5-458SOC-9MHR
    UPC: 816903024346
    MFR#: RF00407

    Barrel Length: 10.5"
    Barrel Thread Pitch: 5/8X32
    Chamber: 458 Socom
    Twist Rate: 1:14
    Gas System: Carbine Length
    Muzzle Device: Panzer Brake
    Handguard Style: M-Lok Hybrid Rail
    Handguard Length: 9"
    Charging Handle: Mil-Std
    Magazine: 458/12.7x42 10 Round Magazine

    MSRP: $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

    MSRP: $40.00
    RF 10.5" 458 SOCOM Complete Upper with 10" FQR RF 10.5" 458 SOCOM Complete Upper with 10" FQR

    SKU: CFU10.5-458SOC-10FQR
    UPC: 816903021079
    MFR#: RF00405

    Barrel Length: 10.5"
    Barrel Thread Pitch: 5/8X32
    Chamber: 458 Socom
    Twist Rate: 1:14
    Gas System: Carbine Length
    Muzzle Device: Panzer Brake
    Handguard Style: Quad Picatinny Rail
    Handguard Length: 10"
    Charging Handle: Mil-Std
    Magazine: 458/12.7x42 10 Round Magazine

    MSRP: $560.95