Dan Wesson DWX magazines take our CZ P10F +3 extensions -- and remain USPSA 140mm compliant.
Testing by TF Customer Larry Foltz:
"Test 1 CZ P10F 19 round factory magazine body, TF +3 base pad CZ factory spring and follower.
Mag holds 22 rounds, fits USPSA 141.25 mm gauge, seats easily on the reload (obviously fits into CZ TSO magwell), ran flawlessly for 100 + rounds.
Test 2 Same as above with the exception of using MBX mag spring and follower.
Mag holds 24 rounds, fits USPSA 141.25mm gauge, takes a little more pressure to seat, but still reloads easy enough, ran flawlessly for a 100 + rounds.
I'm pleased with Taylor Freelance +3 base pads in my DW DWX, and will be ordering more now that we know that they perform with my CZ TSO magwell."