I recently got a winchester model 70 black shadow in 7mm mag for a hunting/target shooting rifle. The trigger ain't all that great, so I was looking on Midway USA for a match trigger and I saw that only a few of them were the same as mine. The rest were the newer M.O.A trigger assemblys that looked alot different. Anyone know if those trigger assemblys are at all interchangeable with the older ones? Any help would be greatly appreciated.