Springfield XDM 10/19 Magblock
This Magblock fits the Springfield XDM 19 round 9mm magazines and will limit them to 10 rounds. Easily installed in seconds under the magazine follower. It is held in place with spring tension alone or can be glued or epoxied if desired.
In the case of the Springfield XD line, it did not exist before 2000, when the California high capacity ban went into effect. Presuming that only XD mags fit XD pistols, it would be impossible to own large-capacity XD magazines before January 1, 2000 -- because none had yet been manufactured. Claiming to have owned such before PC 32310 went into effect is not going to stand up. Make sure you only use 10 round magazines in XD pistols.
-Simple install to make 10/19 XDM magazines.
-No modification to the magazine is required.
-Lightweight and will not interfere with magazine reliability.