NEW- High Output Damping Tuning Module fitting the AirArms TX200. This is the latest model to our patent PG2 dual-guide design producing higher velocities while squeezing out spring noise. No topHat required with this system! Powerful, EZ to install, module design fully assembled, with our new 780118 series valve spring technology. Only 30mm pre-load utilizing no top-hat. Assembled with matching damping rear-guides keeping the power spring aligned through its full shot range. Engineered extremely quiet at full power! No tight guides and seasonal greases that limit full power output. The PG2 is a complete drop-in kit with no modification necessary to the air gun providing a forgiving, impeccable shot cycle. Approximate Velocities .17 lead ammo caliber MarkIII airgun. Included : PG2-damping kit with power spring, O-ring piston seal adapter, lubrication for guides. Install instuctions.