Hi all, I sent in my paperwork just at the end of the year, and just saw today that it's been approved. Already have a SigP239 and a Keltec PF-9, now to holster and practice!
You should be able to find the manual here: http://www.ruger.com/service/productHistory.html# . What do you mean by "the firing pin will not engage now" - does it go click? I recently picked up a MKIII target, and love to shoot it, but agree that it is by far the hardest field strip of any I've had ...