Posted: 6/18/2026 1:54:41 PM EDT
[Last Edit: ACDer][Edited]
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So I have a 45acp P250. I've read online that in the P250, the 45 FCU is universal for all calibers, unlike the P320. So, my 45 FCU fits in a 9/30/357 compact grip module. I can put my P250 dedicated 357 sig slide and barrel on this set up and everything works fine. If however, I a swap a .40 barrel and its dedicated spring into the 357 slide, it hangs up on the FCU and won't retract far enough to install. I'm perplexed as to why the 357 barrel works fine and the 40 does not with everything else being the same. |