F5 MFG Modular Stock System MSS for MP5 And Variants Flat Dark Earth 3in x 6in x10 in F5-MP5-MSS-FDE. F5 Mfg MSS stock kit for the MP5/HK94/HK33/HK53 and other variants Specifications for F5 MFG Modular Stock System MSS for MP5 And Variants:...