| Business | Phone |
| Areo Engineering 15251 Truax Rd # Wc3809, Fayetteville 72704 | (479) 443-0002 |
| Bargo Engineering Co Inc 1755 S Armstrong Ave, Fayetteville 72701 | (479) 442-7711 |
| Custom Machine Works 3188 N Velma Dr, Fayetteville 72704 | (479) 521-8054 |
| M & R Tooling Inc 410 N Main Ave, Fayetteville 72701 | (479) 442-0514 |