JMac Customs is a manufacturer of quality firearm parts and accessories founded by Justin and Ashley McMillion in 2012. The company has been using carefully selected materials in order to design and produce the highest quality Kalashnikov parts and accessories for their devoted customers. JMac Customs offers a wide variety of parts such as barrels, gas block systems, muzzle devices, stock adapters, and many others. JMC pays extreme attention to detail when it comes to production and design of their products.