Would love to buy an extended barrel for my EAA ...any gunsmithing outfit making one that you guys know of...Thanks

I don't know if they make one for the 10mm , or not , but you can check with them .

http://henningshop.com/products/briley-match-grade-barrel-40-sw-6-straight-for-eaa-witnesstanfoglio-small-frame

Most witness pistols are LARGE FRAME these days. Can't remember when EAA stopped importing small frame Tanfoglios, but it was like 5 years or so ago. (maybe a lot longer)
You can purchase from EAA directly a 6 inch straight barrel. Their prices are usually high than a private party, but they are new and available (hopefully).
Hunter barrels are in .45 and 10mm. So those are more available. .40 and 9mm are available in 6 inch from time to time.
Some models are cone barrel and some are straight barrel.