Blue Threadlocker

US Headquarters:
Shadow Systems LLC
1001 Los Rios Boulevard, Suite 100
Plano, TX 75074 USA

Phone Inquiries:
(469) 458-6808

For Customer Service:
Contact Support

For Careers:
Current Openings

Dealer Inquiries are welcome!
Complete our simple form and we will get the conversation started.

FFL Questions

We want to make your firearms purchases as simple as possible. Contact us via email for answers to all your FFL questions.

If you are looking for a local FFL to ship a product to, visit our Find an FFL page.