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Stainless steel spring guide stopper
Aluminum aiming device including additional rail for G Series-style pistols
To accommodate different brand of barrel
1x 180% Recoil Spring
or prone positions
Advanced Piston Head (GBB/TAC41) chest rig cover Stainless steel spring guide stopperThis piston head features: Viton O ring with a ventilated design. No airbrake, short, medium & long airbrake options (for 4. 60 mm internal nozzle for TAC 41 GBB cylinder head only). POM piston ring NBR 80 O ring 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) An airbrake is cutting the air flow before the piston hits the bottom of the cylinder,