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  1. Sig 516 Upper Assembly, 5.56mm, 10

    Sig 516 Upper Assembly, 5.56mm, 10" Barrel

    $999.00


    All upper assemblies are shipped with a recoil buffer and action spring. These components must be installed to ensure proper function of the SIG516 upper assembly on your AR-type lower receiver. Learn More
  2. SIG 516 Gen2 10
    Sig Sauer 516 Gen2 Upper Receiver, 5.56mm, 10" BBL, Full Auto Capable Learn More
  3. Sig Sauer M400 16" 5.56mm Upper Receiver
    Sig Sauer M400 16" 5.56mm Upper Receiver Learn More
  4. Sig Sauer M400 Elite Upper Receiver (No BCG/CH) - 16" 5.56mm NATO, Romeo5
    Sig Sauer M400 Elite Upper Receiver (No BCG/CH) - 16" 5.56mm NATO. Includes Romeo5 (SOR52001) Learn More
  5. Sig Sauer MCX AR15 Conversion Kit - 16" 5.56mm NATO
    Sig Sauer MCX AR15 Conversion Kit - 16" 5.56mm NATO Learn More
  6. Sig 516 Upper Assembly, 5.56mm, 7
    The SIG516 uppers allow operators to upgrade their current AR-15/M16/M4-type rifles from direct gas impingement systems to the SIG SAUER® advanced short-stroke pushrod system. Learn More
  7. Sig Sauer 516 Gen2 16" Full-Auto Upper Receiver
    Sig Sauer 516 Gen2 Upper Receiver, 5.56mm NATO, 16" BBL, Full Auto Capable Learn More
  8. Sig 516 Upper Assembly, 5.56mm, 14.5
    Sig Sauer 516 Gen2 Complete Upper Receiver, 5.56mm NATO, 14.5" BBL - NFA Rules Apply Learn More
  9. Sig 516 Upper Assembly, 5.56mm, 16
    The SIG516 uppers allow operators to upgrade their current AR-15/M16/M4-type rifles from direct gas impingement systems to the SIG SAUER® advanced short-stroke pushrod system. Learn More
  10. SIG 516 Upper Complete 10
    Sig Sauer 516 Complete Upper Receiver, 5.56mm, 10" BBL, Full Auto Capable Learn More

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Upgrade your rifle with a new M400, 516, or MCX Upper Receiver!
Upper Receivers

Minimal Price: $ 289.00 289