![Performance Tune, Sheridan / Crossman - Labor - Palmers Pursuit Shop - Palmers Pursuit Shop](http://palmerspursuit.com/cdn/shop/products/dsc02854_1024x1024.jpeg?v=1579570931)
Palmers Pursuit Shop
Performance Tune, Sheridan / Crossman
Performance Tuning (firing system) includes:
- Dyna Valve, Valve Guide being optimized for CO2. This reduces turbulence and increases accuracy and air efficiency.
- Polishing the barrel
- Smooth and soften the pump action
- drill & tap for RVA if needed