AAC's customer service folks can give you the final answer on that. They may take a few days to get back to you but are very helpful. BTW, if ya'll need a 1/2X28 9mm conversion piston for the Tirant I have a new unopened one for $75.
Ed
Thanks for the replies... It is the same as the evo 9. I have emailed aac and they said that they will be making some soon, but I really don't want to wait around for them. I think it is aluminum so I'm going to try some aluminum pipe with the correct dimensions. Thanks for all of y'all's help.
J
honestly, it's a VERY simple design, and super light, so i'm sure it's aluminum. I think overall, the spacer doesn't have to be all that accurate in diameter since there's A LOT of space between the piston and the spacer.