Sig Sauer, P365 Custom Works Fire Control Unit Fcu, 9mm Luger/380 ACP, Nitride Titanium Finish

The P365 Custom Works Fire Control Unit from Sig Sauer brings the heart of a P365 micro-compact into a custom shop-quality component designed for serious concealed-carry shooters and gunsmiths, and this FCU-only FFL item must be transferred through a licensed dealer; chambered for 9mm Luger/380 ACP compatibility and finished with durable Black Nitride surfaces, it features an exclusive titanium nitride frame treatment and a titanium nitride flat-face trigger that provide corrosion resistance, reduced friction and a tactile, consistent trigger break for defensive and everyday carry use. The unit carries a custom FCU serial number for traceability and installs into standard Sig P365 grip modules, magazines, slides and barrels so you can build a tailored carry pistol using factory and aftermarket parts, whether the goal is a slimmer pocket carry, an optics-ready setup for faster sight acquisition, or a duty-grade micro platform for off-duty carry. As part of the P365 family, this FCU maintains the series� compact footprint and high-capacity potential while offering gunsmith-level customization and long-term durability for those who want a tailored, serviceable fire control solution.