TAC-41 Advanced Piston Head (GBB Version) SP-AO5052-BK Includes 1 internal O-ring to

Includes 1 internal O-ring to reduce firing noise (can be removed if desired)

This is a strictly limited production run

2) High-strength steel construction enhances durability and reliability

Compatibility: MP5 A5 Next Generation

56 muzzle brake)

TAC-41 Advanced Piston Head (GBB Version) SP-AO5052-BK Includes 1 internal O-ring toThis 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