This high-end precision manufacturer based out of Japan is known amongst airsoft enthusiasts and technicians around the world for making some of the most highly polished airsoft barrels and airsoft tuning parts, with a focus on making high-grade precision barrels for sniper rifles, gas blowback airsoft guns as well as AEGs. With their deep knowledge in CNC lathe manufacturing and traditional Japanese dedication to quality, products made by PDI are known to be some of the best tuning parts.