TAC-41 Cabeça de Pistão Avançada (Versão GBB)

This piston head features: - Viton O-ring with a ventilated design. - No air brake, with short, medium, and long air brake options (for 4.60 mm inner nozzle, only for TAC-41 GBB stock). - POM piston ring - NBR 80° O-ring damper - CNC stainless steel construction, for additional piston mass (from 30.2 to 32.2 grams, instead of 7.6 grams for the original piston head) An air brake cuts the airflow before the piston hits the bottom of the cylinder, creating an air cushion that reduces impact noise, possibly at the cost of reduced muzzle energy. 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) - steel variable mass piston body (SBA-BPS-XX)