Fps is proud to present its own line of precision stainless steel inner barrels 100% MADE IN ITALY.
This inner barrel is produced starting from a precision drawn micro stainless steel tube which is subsequently subjected to the following processes:

- CNC turning
- linear grinding
- internal boring
- lapping
- ultrasonic polishing

The shape of the hop-up window has been designed to be compatible with both normal and “flat” type rubbers.
The material used ensures maximum mechanical resistance and total absence of surface oxidation unlike aluminum or brass.
Another great advantage of stainless steel is that it can be easily cleaned with metal brushes without being scratched, thus ensuring the most complete removal of any plastic residues present on the internal surface of the hole.

Technical data:

- length: 165 mm
- internal diameter: 6.03 mm
- external diameter: 8.51 mm
- material: AISI 304 stainless steel

100% MADE IN ITALY

100% COMPATIBLE MARUI