I've had my eye on a company named AGP Arms ever since owning my XD because they they sell a product enabling said cheating-- A +3 mag extension. The little kit sells with a hardened spring, metal base plate and polymer extension to turn standard 13 round mags to 16+1. I kind of lost track of them until recently and discovered that they're located here in AZ much to my surprise; Tempe Marketplace specifically. Their business two times as AGP Turbo Chargers, which caused a bit of confusion, but after dropping my wife off at Steinmart across the street, I dropped $40 on two kits (avoiding S&H in the process with the local pickup). The takedown on the original mags and installation of the extensions was painless with both done in about 10 minutes time. The last round is a bitch to fit in, but the results speak for themselves--
![Image](https://www.dropbox.com/s/cktvyk5ts4edddo/xd3.jpg?raw=1)
So if you have an XD and want a bit more capacity, this is looking pretty good. Will test them at teh next range outting, but all the reviews I've seen have been fairly positive. Another thing that attracted me to this is my hopefully eventual plans to .460 Rowland this pistol. 16 rounds of near 44mag just reeks of sex, I gotta say.