Sig Sauer P365 FCU

(6 customer reviews)



The P365 Custom Works Fire Control Unit (FCU) brings an unprecedented level of customizability and personalization to the micro-compact carry platform. From grip modules, magazines, custom slides, barrels, optics, and accessories, you can configure your P365 in thousands of different ways to personally customize your pistol to your specific carry needs.

  • Exclusive Titanium Nitride Frame
  • Titanium Nitride Trigger
  • Custom FCU Serial Number
  • Compatible with all 9mm P365 accessories
  • Build a custom P365 with a full line of performance parts and accessories at

sig sauer p365

ZEV Technologies announced its first-ever complete SIG-based pistol Monday: The Z320 Octane. It’s essentially an upgraded P320, and a nice one at that. Our brethren at Personal Defense World have an entire rundown on the new Z320 pistol. What also kind of flew under the radar is that not only did ZEV release a slew of accessories for the SIG P320, but also for the SIG P365; that’s what we’ll focus on here.

ZEV SIG P320 & P365 Accessories

So, ZEV released two variants of the complete pistol on Monday: The Z320 XCarry and the Z320 XCompact. Along with those pistols came a few accessories for those who already own a SIG P320. As a bonus, ZEV also released some goodies for the P365 platform. There are new slides, barrels, and sights. Before ZEV made a splash by releasing its first complete pistol in 2019 — the ZEV OZ9— it made a living creating some high-quality upgrades for Glocks. Now that ZEV has officially entered the SIG market, it’s sure to be a hit. So let’s dig in and take a look at the new upgrades.

Let’s start with the ZEV Octane slides. In total, ZEV released 10 slide variants for several SIG platforms. Rather than leave you in suspense, we’ll start with the MSRP. Every slide comes in at $420. As we mentioned there are 10 variants for five pistols. They come in either a gray or DLC finish. Here’s the pistol availability:

  • ZEV Z365XL
  • ZEV Z365
  • The ZEV Z320 XFull
  • ZEV Z320 XCompact
  • ZEV Z320 XCarry

You can do the math on which SIG pistols align with the new “Z” names. The ZEV optic cut allows for the mounting of a red dot without removing the rear sight. The P320 slides feature a Trijicon RMR-compatible optic cut. Meanwhile, the optic cut on the P365 and P365XL slides is compatible with the Shield RMSc, SIG Romeo Zero, and Holoson HS407K. They also include an RMR optic cut cover plate.

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