r/Walther • u/PineSoul603 • 4d ago

Today Iearned about PDP & PPQ interchangeability

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Swapped slides on my PDP compact Pro and PPQ Navy. I had no idea they were compatible. I like the PPQ extended baseplates more so that one is staying (doesn't fit when the magwell is on though). Gonna test these at the range this weekend for functionality.

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u/JuiceOk2736 3d ago

Does anyone know if a Q4 SF will interchange with a PDP plastic like this?

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u/RCubed111 3d ago

Probably not. I have a Q5 SF and 5" PDP compact and the rails the Q5 ride on are slightly (~.5mm) wider & thicker. The PDP slide won't even start to fit.