Description
JB Unicorn M120 Upgrade/Tune Up Kit Specifications:
- Manufacturer: JBU
- Model:
- SDJA41 (M4 Series)
- SDJA42 (M16 Series)
- SDJA43 (AK47 / AK74)
- SDJA44 (AK-BETA Series)
- Includes:
- M120 Spring
- Reinforced Piston
- Metal Spring Guide with Bearing
- Aluminum Air Nozzle
- 2 port Cylinder (M4/AK-BETA) or Full Capacity Cylinder (M16/AK47/AK74)
- Aluminum Cylinder Head
- Piston Head