SRS / TAC-41 - Advance piston head

Advance pistons heads are available in 2 versions: for "AEG" cylinder head (SBA-BPD-01), compatible with SRS & TAC-41, and for "GBB" cylinder head (SBA-BPD-02), compatible with TAC-41 using a "GBB" hopup.

This piston head feature:

This piston head feature:
- Viton Oring with a ventilated design.
- No airbrake, short, medium & long airbrake options
- POM piston ring
- NBR 80° Oring damper
- Stainless steel CNC construction, for additional piston mass (from 30.2 up to 32.2 grams, instead of 7.6 grams for the original piston head)

SBA-BPH-01 "AEG" advance piston head: https://www.silverback-airsoft.com/bp...
SBA-BPH-02 "GBB" advance piston head: https://www.silverback-airsoft.com/bp...

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