MFP Autos Posted September 7, 2022 Report Share Posted September 7, 2022 (edited) On offer is a very hard to find brand new in box 11.5 inch 5.56mm Barrel and bolt caliber conversion kit for the Sig Sauer MCX Virtus. This is everything you need to convert your MCX Virtus in .300 BLK to 5.56. This may only be installed on a pistol or SBR. All NFA rules apply. Sig MCX Virtus 5.56 Caliber Conversion Kit in 11.5" - $650 Edited June 17, 2023 by MFP Autos Link to comment Share on other sites More sharing options...
MFP Autos Posted October 12, 2022 Author Report Share Posted October 12, 2022 bump Link to comment Share on other sites More sharing options...
MFP Autos Posted March 15, 2023 Author Report Share Posted March 15, 2023 Bump Link to comment Share on other sites More sharing options...
MFP Autos Posted June 17, 2023 Author Report Share Posted June 17, 2023 This will also work in the new Sig Spear-LT. Link to comment Share on other sites More sharing options...
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