www.ammoclip.com/P/p5_&_p5compact.htmhere are some aftermarket mags...... Also I seen TrippleK makes them for the P5.... but I am not digging for that addy right now.....
Anyhow a factory P5 mag is somewhere in the $70 to $80 range
I seen a picture of the PW arms import marked ones.....not too bad.... almost not visible on the underside of the frame/triggerguard...... easy to take care of if you want to refinish it
The P5 is a great shooter....and no, I never shot the luger conversion but there is a total of 3 different barrels out there for the P5... but be prepared to pay a lot of $ for it.... there is one on gunbroker with the 30luger and 9mm barrel..... also there is a 9x21 for the P5 all facory
and if you wanna pay more for a conversion than for the P5 itself.... there is some guys that offer a .22lr kit from Germany... though I don't belive they are importing to the USA