john c's absolutely correct
you take a titanium barrel back and a dye ultralite barrel back and not only will you notice that the titanium is far lighter, but its also far thinner
still find it hard to differ away from smart parts method of bore inserts with the freak, one barrel (though its nothing amazing) can sort you out for any paint!
o and you might wanna take a look at slothball mate, theyv got specials on the dye barrels for cockers.. extremely cheap if your lucky enough to bag one before they run out of stock!
Jake.