I had a problem getting a 1 piece base for my M 70 Coyote Lite 243. It was manufactured in 2005 before the close of the New Haven plant, if that tells you anything. To make a long story short. After ordering and returning to Brownells 3 times i finally called Warne. The lady thier really knows her stuff. Anyway instead of a short action reciever it has a WSM reciever, hole spacings are different between the two. She walked right through tell problem like know bodies business. I then called Brownells and told them the story.