Signature Manufacturing, Inc. is an industry leader in providing high-quality AR-style rifles, components and accessories through its SMI Arms brand. SMI Arms specializes in the AR platform - AR15 and AR10 - and is a manufacturer of most of their own components, including upper and lower receivers, bolt carrier groups and components, barrels, trigger kits, lower parts, kits and more. Family-owned and operated for over 20 years. All of our parts are proudly made in the USA. More information about Signature Manufacturing, Inc and SMI Arms can be found at www.SMIArms.com (less)