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5.56mm/.223 Lower Receivers
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Enhanced Charging Handle
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Cylindrical Free Float Hand Guard
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JDMB556-C Muzzle Break
Welcome from the JD Machine Tech family. We have been in business since 1996 manufacturing for the military, defense contractors, firearms, engineering firms and various other industries.
News & Events
- We have moved! Come visit our brand new store and see our newest products!
4170 Morena Blvd.
Suite A
San Diego, CA 92117