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About us

Thin Line Firearms is owned and operated by Brandon and Breanne Spain. Brandon, a career Firefighter/EMT and Breanne, a gunsmith graduate, have been part of Emergency Service Community most of their life. With many family members and friends as First Responders, they chose to honor them with the name, Thin Line Firearms.


Being proficient in mechanics, woodworking, design, and firearm modifications, they are excited to bring their knowledge to you.


For all your firearm needs, Thin Line Firearms is a company you can trust and rely on.

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For questions about a service or to make an appointment, contact us. We are glad to help.



Phone: (423) 718-9587

Location: 449 Lovett Ln. Dayton TN, 37321

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We strive to uphold the values that built this country!

"I would highly recommend Thin Line. Workmanship is of the highest quality. Customer Service is impeccable. These are great people to do business with. Old School Values!"
-John Fine
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