Will FNX-45 mags fit in the FNP-45?

[Flex]

Will FNX-45 mags fit in the FNP-45?

Just watched a video and the FNX-45 mag holds 17. Sweet. Will that mag work in the FNP-45?

[Amsdorf]

The FNX .45 mag holds 15 rounds, not 17.

Total capacity: 15+1 = 16.

Still one of the highest capacity .45ACP semi-autos available.

I know of one video that stated it was 17, but the video has been corrected.

[Flex]

Aha! Yes, 15+1 is plenty good. Love my FNP-45...

[Amsdorf]

They are great pistols!

[LawDawg]

According to some other recent posts by owners of both the FNX and FNP, yes the mags will interchange. Here is one link:

FNP 45 15 round Mags

[marukka]

Para P14 mag extensions and springs will work with the FN45s in case you want 17 or 18 round magazines.

[Longknife]

I have an FNX45Tac coming soon (thanks to SS) and will do a thorough comparison to my FNP45 and FNP45Tac. I have several FNP45s, the first being about four years old, and have had the opportunity a couple years ago to converse with FNH Engineers in Columbia, SC over product improvements. I'll let you know what's changed.

[Knightewolfe]

Aren't the FNP-45 and FNX-45 basically the same gun with minor differences?? Just wondering since I haven't been here for awhile.

[Suwannee Tim]

I called FN and the lady said they take different mags. I didn't really press her as to interchangeability, my guess is she doesn't know. I would really like to know the answer to this question.

[Longknife]

She is correct, they are different mags. The X mag is 13thous" longer front to back, shaped differently at the front top, different follower/spring/catch plate. X mag has 12 witness holes 4-15/ P mag has three 5/10/15.
The P mag fits loosly in the X frame and does lock up. The X mag fits tightly in the P frame, will lock up, but I had to tug it to get it out. The X frame is slightly larger front to back to accomodate the new mag. Will they fire ok this way, can't say! I'm not going to try!