Sig Sauer

Sig Sauer MCX Virtus 16" Caliber Exchange Kit, 300 BLK, Tapered Lug

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MSRP:$699.99 $599.99
UPC 798681579556

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Convert your MCX to the SIG SAUER MCX 16" .300BLK Virtus. Complete with Virtus barrel and gas block assembly.


  • 1x 16" .300 BLK MCX Barrel
  • 1x L01 Gas Valve Assembly & Piston Assembly (Installed)
  • 1x Tapered Lug Bolt
  • 1x Taper Cap

SIG SAUER offers upper assemblies and caliber exchange kits in various barrel lengths. All NFA rules apply to the 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 that (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. As the buyer of these components, it is your responsibility to ensure you comply with all NFA rules and applicable laws.

Barrel Length: 16 Inches

Caliber/Gauge: 300 BLK

Model Fit: MCX

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