FN P90/PS90 30rd Magazine Into 50rd Conversion

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Published 2015-01-11

This is what I did to convert a 30rd FNH PS90 magazine into a 50rd magazine.

DISCLAIMER: This video is only a showing of what I have accomplished with this product. Anyone who desires to reproduce what I have done does so at his/her own risk. Depending on the skill level of the person attempting to reproduce what I have done, the final results will vary. Poor workmanship will result in a poorly finished product and could also cause damage to the product and/or rifle or could cause harm to the person using the product and/or those around him/her. I do not have any control over the skill level of anyone attempting to reproduce this project and I therefore cannot be held responsible for carelessness and/or poor workmanship.

All Comments (21)

@virgildavidson7132 9 months ago

Thanks, i just converted 3-10 round magazine's to 49 round mags. It was very easy to do.
@SilentRazor1uk 7 years ago

Hi, for those that might have a feed problem, make sure the plastic follow is the correct way in and not upside down - with regards the forwards & backwards slant of its face - the shorter length is on the mag bottom and the longer one is uppermost.
@jrnumex9286 3 years ago

good deal, i have a califunny 10 and bottom plate seems attached. but after watching this, in the trash it goes buying a 50
@MRGOBUCKS420 8 years ago

Great video my friend! Thank you!
@CDewayne7 2 years ago

Thank you, excellent video!
@irafowlerjr.7492 6 years ago

great info, thanks
@KillaLogeFTW 2 months ago

TY!!! Liked & subbed
@Pavia1525 2 years ago

Thanks. Cut or dremel. Nice
@chrisp.5272 4 years ago

Took me 15 minutes with a small hacksaw, and no vice. I’d suggest Midway for FN magazines on the cheap.
@therealjarett 9 years ago

Jim, I'm loving your PS90 videos. Thank you for sharing these. I have to ask though, where is that accent from. Almost sounds slightly Scandinavian. :)
@adamcurrent2865 1 year ago

Nice
@213eddy 8 years ago

does it still feed correctly
@CDXXIX 1 year ago

Woo I did it, except I glued the 2 pieces together so that the wire could clip in. Only lose 1 round anyway.
@ShotgunGabe 3 years ago

Wouldnt this reduce the reliability when firing? Since the tension for the magazine spring is much lighter than compare to when it's 30?
@bdawg5415 8 years ago

Can this be done to a ten rounder or are the springs different
@gwspangler9231 2 years ago

I have seen this done without any cutting. Keep looking and you will find the correct video.
@jeremydaileysr.8243 4 years ago

Does it cause reliability issues when converting into a 50 round magazine?
@jeremydaileysr.8243 3 years ago

Will this compromise your springs longevity?
@i_Daniel 1 year ago

Thx dude, I'll test in in da hood
@warsteelcalgarus5790 1 year ago

You could probably 3D print a smaller piece instead of cutting the plastic if you have access to one