Ok I bought 6 extra mags from keltec and one of the mags didnt work right. So they said send it in. They did great and it works great. Now I was cleaning my mags when I pulled the repaired one apart and wow a flat coil magazine spring. I has enough power to work my +5 base plates. I Want these for all my P17 mags.. Now I have to wait for them to respond to email or call on monday. HMMMM call I think.