CNC Steel version of the variable mass piston body, for extreme mass configuration (55.1 grams instead of 19.0 grams for the aluminium version).
Compatible with:
– original SRS piston (SBA-BPS-13)
– original TAC-41 piston (SBA-BPS-30)
– variable mass piston for SRS (SBA-BPS-18)
– variable mass piston for TAC-41 (SBA-BPS-31)
– original SRS piston end (SBA-BPE-01)
– original TAC-41 piston end (SBA-BPE-03)
