| Business | Phone |
| Track 16806 Oakmont Ave, Gaithersburg 20877 | (301) 417-9630 |
| Battlezone Hobbies 17113 King James Way, Gaithersburg 20877 | (301) 947-8044 |
| Engine House Hobbies 315 E Diamond Ave # G, Gaithersburg 20877 | (301) 590-0816 |
| Ghb Intl Po Box 4063, Gaithersburg 20885 | (301) 515-0182 |