Sig Sauer P365 Custom Works Fire Control Unit 9mm Luger/380 ACP Gold Nitride Titanium Frame

The Sig Sauer P365 Custom Works Fire Control Unit (FCU) is the serialized chassis at the heart of Sig's micro-compact carry platform, offered as a stand-alone part so the customer can build a fully customized P365 from the ground up. This Custom Works edition features a titanium frame finished in the exclusive Gold Nitride coating, paired with a matching gold nitride-coated flat face trigger and a unique custom serial number, giving the platform a distinctive factory-custom look right out of the box.

Engineered for both 9mm Luger and .380 ACP, the FCU accepts all Sig Sauer P365 accessory components in either caliber, allowing the user to assemble a 9mm or .380 ACP configuration using any compatible P365 slide, barrel, grip module, and magazine. The flat face trigger provides a clean, consistent pull surface for precise shot control.

This listing is for the Fire Control Unit only. No slide, barrel, grip module, magazine, or sights are included; the serialized FCU is the regulated firearm component.

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