Features:

  • Hard coat anodized finish
  • Aluminum M-LOK handguard
  • Tapered bolt lug
  • Short-stroke piston system
  • Unique internal recoil system

    NFA DISCLAIMER/WARNING:Upper receiver does not meet the 16" minimum barrel length requirement, and requires registration and a tax stamp with the Bureau of Alcohol, Tobacco, Firearms and Explosives (BATFE) when assembled into a complete rifle. Additional state and local restrictions may apply. It is the sole responsibility of the buyer to comply with any and all applicable laws.





    Item# Description Availability Qty
    Break
    MSRP Price Choose Qty
    SIG WUAMCX-5B-556-BLK-TAP
    MCX Rattler, 5.5" Barrel, 5.56 NATO, Upper Assembly

    Back Ordered

    1 $1,899.00 $1,359.50
    SIG WUAMCX-11B-556BLK-TAP
    MCX 11.5" Barrel, 5.56 NATO, Upper Assembly

    Back Ordered

    1 $1,699.00 $1,286.00
    SIG WUAMCX-14B-556BLK-TAP
    MCX 14.5" Barrel, 5.56 NATO, Upper Assembly

    Back Ordered

    1 $1,899.00 $1,286.00
    SIG WUAMCX-16B-556BLK-TAP
    MCX 16" Barrel, 5.56 NATO, Upper Assembly

    Back Ordered

    1 $1,899.00 $1,286.00

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