MechTech Carbine Conversion Unit. There wasnt much said about them on the very short threads already searched on this kit from a while back and I was wondering if there is any new current info? My friend just bought a KelTec Sub 2000 but it felt rickity and the grip was splitting when you inserted the mag and the safety button works in the opposite direction than usual. I didnt like it. Wanna kill these ads? We can help!