Omega Tank Fitting??

My 6.8 liter Omega tank from Airguns of Arizona has a 7/8-14 thread which is the U.S. SCBA and scuba tank standard. I am sure the 9 liter Omega tank is the same. Their smallest tank may use the 5/8-18 thread that other small carbon fiber tanks in the U.S. use. Omega tanks are made in Korea but use U.S. standard threads, not the 18 x 1.5 metric thread that the Chinese tanks use. Check with AofA to be sure but I think you'll find this be correct. Owners of the compact Omega tank are welcomed to chime in.