Originally Posted by General Klinger
I didn't know that. Last I knew, they had M-5 and M-7. Jaimie and Adam shot at M5 and the other 3 shot at M7
Jaime still owns M-5. As Mythbusters grew it started taking over the place and interfering with Jaime's business so they moved the production to its own shop, M-6. M-5 has returned to its original business of being a shop for special effects designers.
There was also a rumor that Jaime was just tired of Adam wrecking the place. He dropped a bowling ball which cracked a huge chunk out of the concrete slab. Adam just shrugged.
In the background of early episodes you can see work done by Jaime's clients. There was always the risk of a Mythbuster experiment damaging it and costing him lots of money.