Upgrading Inner Barrel for USP
 

Hi, gbb pistol newbie here, ive been thinking of giving my USP more range so it would be more useful in the field. Assuming I have all the other necessary upgrades, I'm having trouble looking at inner barrels for my pistol. Are all pistol inner barrels cross compatible across platforms? Since inner barrel selections for the USP are limited to the 137mm for the USP match and i would like something longer.

I'm looking at especially these barrels:
http://www.evike.com/products/41895/

http://shop.ehobbyasia.com/upgrade-p...l#.U8NDALHCYco

http://shop.ehobbyasia.com/upgrade-p...l#.U8NDe7HCYco

Also anybody telling me what would the difference between them would be great also.