- suitable for VIPER VI-46 GBB
- Includes: steel bolt carrier, aluminum nozzle set, disassemble heavier mass, steel nozzle guide
- Steel bolt carrier full CNC machining, manganese phosphate surface treatment
- Aluminum nozzle set full CNC machining, coated with hard anodizing in MIL-STD
- Steel nozzle guide full CNC machining, manganese phosphate surface treatment
- Recommended to use gas magazine
- (M3 Screw)Recommended fastening torque 1.96 N.m
- Please use torque wrench and threadlocker
- Piston bore diameter: 19mm

Manufacturer: ZParts