I have a M70 stealth in 22-250 I was going to send off to Krieger barrels for an action truing and rebarrel in 308 Winchester for a F/TR rifle. After taking off the scope and mounts so I could ship the rifle, I pulled the bolt to make sure the chamber was empty and when I closed the bolt the firing pin didn't stay in the cocked position. It gently slid to the fired position. It doesnt appear the trigger is engaging the sear, allowing the firing pin to slide forward as I close the bolt. It stays cocked until I close the bolt. It has never given me any trouble before or ever slam fired, nor has it in anyway been roughed up. On visual inspection I didn't notice any broken springs or parts. Just the failure of the trigger to engage the sear. Any fixes for this one? Cause I'm stumped.