X-Fire/PDI now has started selling their new inner barrel line-up that they have announced previously and you can have it discounted as their Christmas promo is ongoing. You can get the discount by buying directly from their website... "We started to selling new 6.01 barrel (Outer Dia.10mm). The 1st line up is PTW 509.5,G-SPEC,L96,VSR LONG . We have Christmas discount sale,so many customer buy a lot, please purchase before sold out :)

Thanks,

Tomo"