I have a sig P250C 9mm and just purchased a P250F 40 S&W xchange kit used . The slide assembly won't engage on the frame I changed the barrel,slide spring ,and guide. Still no go. The P250C slide will work on the full frame. Any help ?
The p250 FCU is not the same as the P320 .There is nothing to push down . the 9mm compact slide assembly works fine on the full size frame. It will lock properly. The slide spring and guide rod on the 40 are hitting on the FCU and won't allow the slide to retract
Can you push down on the front of the guiderod when the slide won't move any more?
Will the slide go on without the barrel and guiderod?
Can you include some pictures of the parts and where the lockup occurs?
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