M3 Whitetails…. Here on our Texas deer breeding farm, does this 3 year old whitetail deer look like he has some growing left to do? This M3 Whitetails buck would be an excellent choice for a deer breeder pen, a DMP operation or for pasture release. Like my bucks? Buy my does! The deer pedigrees of our whitetail deer for sale include the best and most recognized whitetail genetics lines in the industry.