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.380 FCU with 9mm

885 Views 3 Replies 3 Participants Last post by Talldog, 12 mo ago

gbcz

Discussion Starter · 12 mo ago

I got my wife the 365 in .380 recently (FWIW it is a sweet shooter). Anyways, while browsing Sig's site I saw the Spectre Comp slide was available and ordered one. They claim they aren't compatible with 380 components, but does that include the FCU? I haven't thought to try the 9 slide on the 380 FCU and vice versa.

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Carmel Sig

· #2 · 12 mo ago

My understanding is the FCU works with both the 380 and 9mm slides. I put my P365 380 slide onto my P365 9mm FCU and it shoots just fine! Love the flexibility.

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gbcz

Discussion Starter · #3 · 12 mo ago

Carmel Sig said:
My understanding is the FCU works with both the 380 and 9mm slides. I put my P365 380 slide onto my P365 9mm FCU and it shoots just fine! Love the flexibility.

Good to know, thanks! So my FFL literally just called and said that the 365 Comp I had backordered actually showed up..so I'm trying to decide whether or not to pass on the gun and keep the slide, or keep the gun and send the slide back..haha

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Talldog

· #4 · 12 mo ago

Carmel Sig said:
My understanding is the FCU works with both the 380 and 9mm slides.

Yes. The grip module and FCU are common between the two calibers. The slide, barrel and recoil spring are specific to each caliber.

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