A quick search for XDm extended mags brought up these monsters.
http://www.pistolgear.com/proddetail.php?prod=00PG021
They bring the .40 XDm capacity up from an already healthy 16+1 to a massive 25+1! The only way I could practically carry the XDm with this mag would be in a shoulder holster, but carrying 3 of these mags would give you 75+1 rounds. What do you think of these?
http://www.pistolgear.com/proddetail.php?prod=00PG021
They bring the .40 XDm capacity up from an already healthy 16+1 to a massive 25+1! The only way I could practically carry the XDm with this mag would be in a shoulder holster, but carrying 3 of these mags would give you 75+1 rounds. What do you think of these?