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: SBA-BPH-02 “GBB“ advance piston head: Music: Lawrence - Kurama