| 
PDI Bore-Up Premier Cylinder Set HD (High Durability) for VSR-10 Series Sniper Rifles
Included ：
- Precision Cylinder
- Taper Cylinder Head+
- HD-Piston (No.631251)
- SP-Guide (No.631428)
* Please use with large diameter spring as SPR,SS,VSR series.
Precision Cylinder
- Internal diameter 22mm (same as stock)
- Made of Stainless Steel (SUS304)
- Inner diameter tolerance ±1/100mm.
- Processed laser welding & fixed by parallel pins.
Taper Cylinder Head
- Made of Stainless Steel (SUS304)
- The nozzle is longer than normal and has tapered tip creating more stable output.
- The nozzle tip has an O-ring which creates a better air seal.
Hard Piston
- Piston Body: Duralumin.
- Stabilizer Rings: Derlin.
- Piston End : Stainless Steel.
Spring Guide
- Made of Stainless steel and Polished, making a smooth action.
- It has a thrust ring that made of derlin.
- This spring guide is the best for HD Piston.
- Please use with larger diameter springs.
- For experienced players only
- Buyer assume all responsibilities
| 
