I have 2 Savage rifles 1, 22-250 and another 243 both with accufit stocks fitted with AICS bottom metal for AICS magazines. I am not familiar with the MDT chassis but I could not be happier with the magpul magazines. I have 1 5 round and 1 10 round, they work perfectly. Since I can only shoot 1 rifle at a time I don't have a need for more of them but I highly recommend them.