Factory replacement 5.5" barrel for the MCX Rattler

SIG WCALX-MCX-5B-300-TAP

Retail: $999.99
Price: $729.00
You Save: $270.99 (27.1%)
Availability: Out Of Stock / Not Available For Back Orders
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Manufacturer LE/Mil Program Pricing - Purchaser Must Provide Proof of Eligibility. Eligibility Guidelines



Genuine replacement barrel for the 5.5" 300BLK Rattler. Complete with barrel and gas block assembly..

SIG SAUER offers upper assemblies and caliber exchange kits in various barrel lengths. All NFA rules apply to installation of these upper assemblies to lower receivers and caliber exchange kits to upper receivers. Upper assemblies and caliber exchange kits with barrel lengths less than 16 ?may only be affixed to lower receivers which (1) are not recorded as a rifle lower by the manufacturer and do not have a stock attached to the lower receiver or (2) registered with the BATFE as a short barreled rifle (SBR).

Please check with your local and state municipalities for any further regulatory requirements. It is your responsibility as the buyer of these components to make sure you comply with all NFA rules and applicable laws.

We are proud to participate in SIG Sauer's Law Enforcement / Military Discount Program which offers many popular SIG weapons at significant discounts to eligible customers. Eligible customers are:

  • Military: Active, Reserve, NG, Retired, Medically Retired, Service-connected Disabled Veteran, and Honorably Discharged
  • Law Enforcement: Federal, State, and Local Active or Retired Sworn Officers
  • Law Enforcement Academy cadets with cerfified enrollment documentation
  • Corrections Officers including Parole and Probation Officers
  • Active 1st Responders: Firefighters, Paramedics, and EMT's
  • Armed Licensed Federal, State, City and Private Security Officers with ID and Documentations
  • Court Judges
  • District and Deputy District Attorneys

You MUST qualify as one of the above to purchase this weapon. In accordance with our manufacturer agreements, we are only permitted to sell LE/Mil program weapons to eligible individuals.

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