Made of Aluminium,CNC all machined.
It's processed Black anodized.
For TM VSR-10 original cylinder & PDI Precision Cylinder or RAVEN Cylinder.
This Receiver has no SUPPORT RING inside.
An inner diameter fits to above cylinders completely.
TM VSR-10 original receiver is by Zinc so not so strong.
So we recommend to change this receiver to get durability.
PDI Premier Cylinder (Bore Up series) is no available,please note