uzi smg barrel question

[mms]

so back story, i bought a B&G bolt it is in transfer to me now. i have since picked up a welded up GI semi reciver.

i was pleased to find that it allready came with a 8mm grip pin hole and a milled down semi feed ramp. But i need to determine what barrel trunnion it has.

what is the OD of the 2 "bands" on a uzi smg barrel. or if any one around Indy has one i can meet up and drop in to see if it fits that would be awesome. since uzi barrels are no longer cheap about $140 a pop i dont want to buy both styles knowing that one will not work.

any help would be great

thanks

 

[ShootnCut]

See if this helps..........
https://www.google.com/search?q=uzi...QSluIHYDQ&sqi=2&ved=0CCkQsAQ&biw=1024&bih=680