Interchanging M&P slides and frames

[amac]

I have a M&P 9mm with 4.25" slide and am considering purchasing a Pro. I've tweaked my current frame with a trigger upgrade, stippling and such. I've compared my frame to a buddies Pro and they are identical, as far as I can tell. I put his slide on my frame and everything ran fine. Am I missing something?

What's more, the description of the Pro says it has a 5" barrel and standard's is 4.25". But it's the slide that's 5". The barrels are the same size. Even the guide rod positioning is the same. Again, am I missing something? Thanks

[wahoo95]

The M&P Pro comes I have both 4.25" & 5" versions.......sounds like your buddy has a 4.25" version which is not much different than your standard model outside of trigger and sights.

[amac]

The M&P Pro comes I have both 4.25" & 5" versions.......sounds like your buddy has a 4.25" version which is not much different than your standard model outside of trigger and sights.

Positively, he has the 5" version. I have a 4.25" - NOT Pro model.

[beastfrog]

Having owned a 5" pro and several 4.25" FS models, I can say that the barrels are indeed not the same size. Guide rods are the same but barrels no.

The frames are the same and you can indeed switch the top ends at will.

[amac]

Just talked to my buddy. As your probably already aware, the barrel is longer. Ooops!

Otherwise, i assume there is no issue with slide to frame fit.

[9mmsteve]

Will a compact slide fit on a full size frame?

[Titleist]

Will a compact slide fit on a full size frame?

No.

But you can make stupid configs like so:



What can I say...I was bored.

[Smash]

Oh God why do I like the way that looks.

[GJM]

I have been interchanging the upper and lower between a 45 mid-size and full size, one with, and the other without, the thumb safety. Both have Apex DC triggers. Working fine so far.

[Magsz]

It works fine.

Just keep in mind you're inducing odd wear patterns between slides and frames.

This could lead to premature wear.