I was at a range 19 Jan attempting to shrink my groups to a more respectable size when, after a shot, the slide locked back. Hmmm, this should not happen. Put it back into battery, fired and again, locked back. something other than a glance showed that 1) the thumb safety on the left hand side (.45 FS RIA) had broken and 2) the contents of the plunger tube - slide lock plunger, spring, and thumb safety plunger - had departed for parts unknown. I called RIA in Nevada and the lady said all the guys were at SHOT. I called back on 29 Jan. Today I received all the missing parts. 2 day service, no charge. Good customer service.