I have a MP-15-22 PISTOL with a DOUBLE TAP trigger . The person I bought it from , told me he installed the trigger parts himself. Well something wasnt right and he couldnt get the safety to properly engage , but it fired just fine. I would like to get it fixed right for safety reasons and I dont care to have a faulty firearm . Have any of you guys have that problem with your DOUBLE TAP trigger , or that FRANKLIN TRIGGER for that matter ? I dont mess with something that I dont know about . Always MORE EXPENSIVE to get fixed after I fumble around with project , I do have original factory parts he took out.