MCK Micro Conversion Kit Primary Combo Glock 17/19/19X/22/23/31/32/45
MCK Micro Conversion Kit Primary Combo New MCK Micro Conversion Kit Primary Combo ( Glock 17/19/19X/22/23/31/32/45) Get more grip, improve your sight and stability with the official MCK Primary Upgrade Kit by MCS USA. This Upgrade Kit is designed for and fits the latest Micro Roni Kit the Micro Conversion Kit (MCK), as well as previous Micro Roni models for Glock 17 and 19.