Advanced Piston Head (SRS & TAC-41) 7-inches while the rigid top and

while the rigid top and bottom keep it sturdy and easy to drink from

Material: Zinc alloy

Excellent barrel for upgrading your airsoft replica

1x lens cap

Cerakote® metal receiver

Advanced Piston Head (SRS & TAC-41) 7-inches while the rigid top andThis piston head features: Viton O ring with a vented design. No airbrake, with short, medium, and long airbrake options (for 4. 00 mm inner nozzle for original SRS and TAC 41 stock POM piston ring NBR 80 ring damper CNC stainless steel construction for additional piston mass (from 30. 2 to 31. 7 grams, instead of 7. 6 grams for the original piston head) An airbrake cuts off the airflow before the piston hits the bottom of the cylinder, creating an