This product is without cilinderhead, we recommend the stock Tokyo Marui one!
Compatibility: For Tokyo Marui, CTI and other compatible Hi-CAPA Series Airsoft GBB Pistols (Modification may be required. Professional installation recommended.)
Package Includes: Blowback housing
Weight: 5 gram
Read before installing
Don’t overtight the screws, they don’t need any force.
We highly recommend to replace part H51-50 for a stonger one!