quote:

Originally posted by SIGfourme:
The intent of the FCU was that an idiot could swap out the FCU into a new frame.

Again, you're conflating the P320 FCU and the P365 FCU.

Two different animals.

The P320 FCU is intended to be a robust self-contained unit that even an idiot can take out and swap from grip to grip, and the instructions for doing so are included in the basic user manual.

Not so with the P365 FCU.

In fact, as I noted before, the P365 manual specifically warns against any further monkeying with the innards of the pistol beyond basic field stripping of the slide/barrel/recoil spring or swapping of the mag release from one side to another. That would include removing the P365's FCU.

quote:

Sig and Wilson sell grip modules that allow swapping.

And the various handgun manufacturers and aftermarket sellers will sell you parts to replace anything you want in the guts inside any firearm. Doesn't mean that it's intended for anyone and their dog to be able to do this correctly on any gun with zero knowledge or training, or that there's no way for something to go wrong or be done incorrectly along the way.

With great power (of modifying your guns) come great responsibility (of knowing what you're doing first).

quote:

This is a different gun. The takedown lever was sticking= not rotating to allow the slide to come off.

But as you stated, this didn't crop up until after you had removed the FCU from the grip module, resulting in parts becoming misaligned (bold emphasis mine):

quote:

Another Sig 365 XL Romeo Elite with the safety lever backing out after removing the FCU from the grip frame.

quote:

Originally posted by SIGfourme:
The military intent of the FCU was that an idiot could swap out the FCU into a new frame.

Where did you get that idea?
The last time I looked, military P320s (the M17) had takedown levers that could not be removed without a special tool, and for the express purpose of preventing removal of the FCU.

And for the benefit of others who might be misled by sloppy use of terminology, the “frame,” which is another name for the receiver, is the serialized metal insert that goes into the grip module and that holds the trigger and sear mechanisms and other parts. The plastic part that we hold onto when firing the gun isn’t the frame of the P320.