Originally Posted by voyager4520
You would need an aftermarket .45-10mm conversion barrel for the G30 with G20/29 magazines, and you may need to modify the extractor. Here's another thread about it, I've never seen the extractor modification discussed openly, it seems KKM sends out a piece of paper with the barrel that gives instructions on how to modify the .45 extractor to work best with both the original G30 barrel and their .45-10mm conversion barrel.
Bingo. I would go with KKM all the way and stay away from LWD unless you want to fight a short tight chamber and you are planning on shooting reloads.
These barrels are bored a little offset due to the size difference in the .45 to .40 change over and most of them seem to work.
Good luck and post your results.