I did not get the wyatt kit or box just the follower. I have not checked but was told it is for a 3" box. I was also told the rem 700 box is shorter than the win, otherwise I would have bought the wyatt 6.5 prc kit. A little of topic but did your smith true/blueprint you action, lab lugs, etc. just out of curiosity was it necessary? if so what was required?