- Crews Custom Gunsmithing Law Enforcement Personal Defense Competition Email: john@crewscustom.com Phone: (714) 349-7352 Welcome OPEN for Business UPDATE I have recently reopened and I am now located in Yorba Linda, California. To my current and returning clients, thank you for making this website so successful. I hope to continue serving your needs in the future. To my new visitors, take a good ...www.crewscustom.com