Because the SAO Variation doesn’t Use a decocker it need to be manually decocked by pulling back the hammer with the thumb, squeezing the trigger, and slowly and gradually reducing the hammer to your uncocked placement. The P220 10mm is a major, large gun. I’ve carried hid guns this large https://agendabookmarks.com/story17081450/p220-legion-10mm-holster-things-to-know-before-you-buy