SIG Sauer P365 FUSE 9mm — 4.3 in DLC Barrel, Optics-Ready Stainless Slide, 21+1 Capacity, LXG Grip
The P365 FUSE is a 2024 crossover variant in SIG Sauer's P365 series, pairing a 4.3 in carbon-steel DLC barrel with a stainless, optics-ready slide. It retains the modular P365 FCU architecture and accepts P365-pattern double-stack magazines. This example includes three magazines (two 21-round and one 17-round) and comes with factory accessories, offering a high-capacity, feature-rich configuration in a compact footprint.
Condition
Overall Condition: Very good condition, showing only light, superficial signs of prior handling or use.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: This firearm is in great shape. There are minor scratches and blemishes present.
What’s Included
- 2x 21-round magazines
- 1x 17-round magazine
- SIG SAUER factory hard case
- SIG SAUER owner's manual
- Lock
- Backstraps
- Optic pegs
Announced in 2024, the P365 FUSE brings a longer 4.3 in barrel to the P365 family while keeping the series' modular FCU design. The configuration supports P365-pattern double-stack magazines and ships here with two extended 21-round magazines plus one 17-round magazine for a 21+1 maximum capacity.
The carbon-steel barrel wears a durable DLC finish, and the stainless slide is optics-ready with an optics cut, forward and rear cocking serrations, and relief cuts near the muzzle. A 1913 accessory rail provides space for compatible lights or accessories.
Sight alignment is fast and clear with a green fiber-optic front and a black serrated rear, set over a 6.0 in sight radius. Controls include a left-side magazine release and a flat-faced, nickel-plated trigger. The polymer grip module features LXG laser-engraved texturing for a secure, consistent hold.
At 7.2 in overall length, 5.1 in height, and 1.1 in width, the P365 FUSE balances capacity and size. Weight is 23.1 oz with magazine. This pistol is identified by SIG's part number 365XF-9-BFO and carried an MSRP of $779.99.




