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Discussion Starter #1
I have wanted to put a p90 slide/barrel(45acp) on my p85 9mm for a long time and I found the parts. I found the slide and barrel on an auction that ends in 4 days so your help is appreciated. So has anyone wanted to do this conversion or do you have both models so you could check if it works?
 

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My guess is that you'd find that the P-90 barrel/slide won't be "drop-in" replacements on the P-85/89 frame, and my real gut-feeling is that the P-90 parts won't work at all on the smaller P series frames..... <!--emo&???--><img src="http://beartoothbullets.com/iB_html/non-cgi/emoticons/confused.gif" border="0" valign="absmiddle" alt='???'><!--endemo-->
 

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Discussion Starter #3
The frame is the same or very close to the 85-89 series. I believe the only difference is the Magazine well on the 90 is smaller so I would have to essentially make my own clips out of a 9mm or 40 s&w.
 

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If it was me, I would just buy a 90. I believe your going to run into feeding problems. Any Ruger stock will shoot anything you feed it just fine. I would say trade if you want, but don't try this. Personal opinion. Elliot
 

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I'd have to agree with Elliot....... The P-series pistols are quite affordable, and converting a 9 to a .45 (in my opinion) doesn't really make a lot of sense. You're sure to run into headaches with a conversion of this type, but I know that finding a P-90 top-end at a good price does tend to make us think weird thoughts sometimes, right? ;)

Been there..........
 

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The Hog Whisperer (Administrator)
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I used to have both a P89 and a P90, still have the 90, and as I recall (vaguely) once I did take them apart side by side and compare.  The P90 slide assembly is quite a bit wider and the frame as well, if I recall.

Seems like a difficult conversion, at best.  Was hoping that someone else who had both guns would weigh in and confirm these thoughts.
 

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Sniper454
 I would do what I did-trade the P85 for a P90 and never look back. .45 ACP way better then that little 9MM!! Great gun bad Caliber! Obviously you are like me and like throwing a big peice of lead when needed! I CCW my P90-and feel very comfortable knowing one shot will end any disagreement with a bad guy! Who needs 15 rounds when one will do.  Most times they see that big hole in the barrel and run!!
 
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