Tomo of PDI/X-Fire sent in news about their upcoming Modular Stock for the VSR-10 series. The stock is all CNC machined and you can use any slide stock and grip. The grip is set at GBB size so it'll be more realistic. Tomo also added that the you have to use the PDI Hop-Up Chamber and you can use the TM original trigger or the one made by PDI. As for the other stuff needed, will need to buy grip, stock pipe, and buttstock.

The PDI VSR-10 Modular Stock will be released in limited quantities, the pre-order price is JPY75,800 or roughly US$935.00. This might make you think twice as it will blow your airsoft budget for Christmas.