- Complete Tech-15 Upper Reciever
- Caliber .22
- Fostech Mach-2 13″ Rail
- CMMG .22 Sear Trip Kit
- CMMG 16″ .22 Barrel 1:16 Twist
- (1) 25-Round .22 Magazine
Want to run your Echo AR II or Echo Sport mode in .22? The Fostech complete .22 upper receivers are set up and ready to roll in your Fostech Echo trigger setup. Each upper comes complete with everything needed to run .22 with your Echo equipped lower.