Muskrat (version 4) was released as part of the 2013 International G.I.Joe Convention (Indianapolis, IN) exclusive Night Force - Nocturnal Fire box set from the Official G.I. Joe Collectors' Club
This complete Joecon Exclusive comes exactly as shown.
Safety Warning: Products intended for Adult Collectors. Products may contain sharp points, small parts, choking hazards, and other elements not suitable for children under 16 years old.