The next generation of Micro Roni is here! CAA improved past generation models into the ultimate conversion kit. It's Micro Roni Generation 4, and they call it Micro Conversion Kit, or simply MCK. This Micro Conversion Kit fits multiple handgun models, into one platform, and helps convert your pistol into the ultimate Sig Sauer gun. It is significantly improved from previous generations of the Micro Roni Stabilizer.