The stock for the Kimber 84M Montana and 8400 Montana is made in-house by Kimber. The stock was designed by Melvin Forbes of NULA. If you look at a NULA stock and a Kimber stock, the contours are very similar. The 8400 stock was actually built heavy to dampen recoil. The 84M stock is a good bit lighter than the 8400 due to the lighter recoil of 308 based cartridges.