Look to rebuilding yours if possible. A friend not long ago got stuck with a nice M54 with a M70 shroud on it and the most dangerous trigger I've ever seen. (I have a video). Bubba leaned hard on that one!! The sear was ground away at an angle like an override is, then, since the safety didn't work, the cocking piece was ground away but the safety still didn't work, of course, so frustration caused it to sell. My friend ended up buying a complete M54 action so original parts could restore the rifle to how its supposed to work. YES, A model 70 trigger can be fitted with bushings, but then you don't have a bolt stop.