The New MCK Trigger Guard Comes in three different models. The MCKTG1 for the MCK Glock the MCKTG2 for the MCKGEN2 Glock and the MCKTGU for all other MCK models such as Sig Sauer Springfield Smith &Wesson etc. This now allows the trigger to be physically covered while transporting your MCK. - MCK Trigger Guard: The MCK Trigger Guard is a durable snap on accessory for carrying a loaded MCK and features a quick release design so your MCK stays safe during transport but is ready as soon as you need it. When not in use the MCK Trigger Guard can be retained on the side picatinny rail of your MCK.