With the P365 micro 9mm platform not even a decade old, SIG has updated the platform with the new Fuse variant that includes all the features expected on a full-sized practical/tactical pistol.
The new SIG Sauer P365 Fuse gets its name, says the company, as it is the "fusion of capability and concealment," being still carry-sized while clocking in with a very full feature set that includes a removable magwell, nickel-plated flat-faced trigger, LXG grip module with interchangeable backstraps, optics-ready (RMSc footprint) slide with decent iron sights, and extended 21-round magazines.
The new SIG Sauer P365 Fuse. (All Photos: Chris Eger/Guns.com)
The pistol will be available in at least three different SKUs, including one shipping with two 21-round and one 17-round magazine, another with a Romeo X Compact micro red dot installed (shown above), and a state-compliant (10-round mag) version.
The Fuse sports a DLC-finished 4.3-inch carbon steel barrel, which is over a half-inch longer than the 3.7-inchers seen on models like the P365 XMacro Tacops and P365 XL. This gives the pistol an overall length of 7.2 inches, making it the longest P365 in SIG's growing stable. Height with the standard 17+1 round (same as XMacro) flush-fit mag is 5.1 inches while the overall width at the thickest point is 1.1 inches.
The P365 Fuse compared to the P365 XMacro Comp. Note the Fuse is a bit longer but remains the same height and width. Both use SIG's 17+1 round flush fit P365 mags and accept extended magazines as well – which we will get into.
Another look at the P365 XMacro Comp, shown left, compared to the new P365 Fuse on the right. Of note, the XMacro – which has been carried extensively – wears SIG's Romeo X Compact MRD, while the Fuse has the company's new fully enclosed version of the Romeo Xc. The P365 Fuse has different iron sights, including a tall blacked-out rear and a Dawson Precision fiber-optic front.
For a frame of reference, the full-sized P320-M17 specs out at 8 inches in overall length with its standard 4.7-inch barrel, just a skosh bigger than the Fuse. However, don't let that one spec confuse you, as the P365 variant is much slimmer, shorter in height, and almost a half-pound lighter. Keep in mind both are shown with 21-round mags inserted and with corresponding versions of the Romeo X enclosed red dot.
Disassembly is easy, with toolless takedown via a grip module mounted lever. The P365 Fuse uses an interchangeable serialized FCU, paving the way for future user-level customization via easy slide and grip swaps.
Surface controls are all on the left side of the gun, including the downward rotating takedown lever, slide catch, and push-button reversible magazine release, all of which are easy to manipulate. The adjustments on the Romeo X are on the same side.
This leaves the right side of the P365 Fuse smooth. Note the external ejector, which also provides the user a tactile loaded chamber indicator.
The LXG grip module on the P365 Fuse has laser-engraved stippling, providing aggressive texture. The pistol also ships with two additional backstraps for users to experiment with to semi-customize the grip.
The extended magwell is removable. Note the high undercut on the trigger guard.
As well as the extended beavertail and high cut, allowing for a higher grip and quicker follow-up shots.
The slide uses extensive scalloping and contouring, which besides adding to the pistol's overall aesthetics also keeps slide weight down.
Note the three-slot M1913 accessory rail and fiber-optic front sight. SIG ships the Fuse with a green rod installed, but other colors are included in the box should the user desire to swap them out.
SIG ships the standard Fuse model with two extended 21-shot magazines, a flush-fit XMacro-sized 17-shot mag, and extra backstraps, along with other accessories and literature.
The mags are steel-bodied and have rear witness holes. Note that the 21s are full-bodied mags with a plastic sleeve, not 17s with an extended baseplate installed.
For those curious, we found the P365 Fuse, with a loaded 21-round mag inserted, and the Romeo Xc installed, to stand 6.8 inches high and hit the scales at 33.3 ounces when carrying 22 rounds of Speer Gold Dot 124-grain JHPs.
The standard nickel-plated flat-faced trigger of the P365 Fuse breaks at 90 degrees after a short take-up. In an average of 10 pulls right out of the box, we found it to hit the 5.25-pound mark. The reset is short and audible.
Check out this firing clip to see the trigger in action:
How does it shoot? Well, we've only had the P365 for a few days but have already logged 300 rounds without issue.
A typical run:
Expect a detailed review in the coming days and weeks after we up the round count and give it some tough love.
The new SIG Sauer P365 Fuse, seen with a SIG Foxtrot 2 WML and Romeo X Compact red dot installed. (All Photos: Chris Eger/Guns.com)
