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The internals of the P365 are very different than the P320. The P365 has a design that is much more akin to the design standards of other striker fired pistols. The 320 uses a different slide lock lever layout and a coil spring held in by a horizontal lateral pin where the 365 uses a wire like spring in the FCU chassis and the takedown lever arm to hold the slide lock lever in place and give it spring tension. The disconnector is in slightly different location on each and a different size and shape; same with the firing pin safety lever that pushes up on the firing pin safety plunger in the slide. The 320 FCU has a separate housing for the sear assembly whereas the 365 sear fits into the FCU chassis directly. The 320 FCU goes into the grip module then the take down lever is pushed through a hole in the grip module and FCU; the 365 has the take down lever in place in the FCU and the whole assembly is placed in the grip module as a complete unit. The P320 FCU is stamped sheet metal and the 365 FCU is a casting which is then finish machined The ejector on the P320 is just a bent over part of the stamped steel, the ejector on the P365 is part of the machined component.

What did you find?

I'm interested, pm me

I haven’t studied the internals of each one to really learn how they work, but the absence of issues with the 365 says a lot. Sig writes off the 320 troubles as user error, but a smaller gun that is probably more often carried AIWB or in a pocket than the 320 should be in the news more often if it’s all just negligence. I wouldn’t touch a 320, but I have a 365 and would buy another one.

Bump

Just looking to sell thanks for offer.

That'll leave a pucker mark in leather seat

I believe 10.5” when I measured from chamber to where the flash hider starts

Thanks, I just ordered single vision transition, safety lenses

What are you looking for in the way of trades?

bump with price reduction. $1795 OBRO

My knowledge of the internals of modern pistols is rudimentary at best. With all the hoopla about the 320 lately, I’m wondering a bit about my 365 series pistol. Does it share any of the processes fhat plague the 320?

Bump

The pump action is not spring loaded.

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