The DPM system is incredible. Glad I have one cause lately they have not answered their email. Just google DPM MECHANICAL RECOIL SYSTEM. It comes on a boat from Greece, about 15 days delivery. Seem to me that some US company will be making this soon. Real high quality and 1 small spring and 1 large spring and a cylinder with strong magnets. Contains recoil and keeps slide from slamming back forward to. I want one for my KT pistol 380.
trust this for 20$, if your going to area of town you don't like, get a mic and place pistol rite above your biz with your right hand "or left" , the cord that comes with it goes around your belt. You can not shoot yourself, (one chambered always)it may save your life and really hides good. You have your left hand free to reach for your wallet while popping caps with your right hand. Also trigger cover is great around the house for safety. I have one on every pistol.