Sig Sauer P365 FUSE BFO 9mm Luger Full-Size, Optic-Ready, 4.3 in Barrel, 21+1 Capacity
The P365 FUSE brings full-size capacity and ergonomics to the P365 series with a 4.3 in conventionally rifled, DLC-coated carbon steel barrel and a modular FCU architecture. Its optic-ready slide uses the RMSc footprint, and the grip module adds a flared, removable magwell with LXG laser texturing and interchangeable backstraps. This example ships with four factory steel magazines, including three 21-round extended mags, fiber‑optic sights, and a MIL‑STD‑1913 dust‑cover rail.
Condition
Overall Condition: Excellent condition, showing only faint signs of any prior use or handling.
Bore Condition: Excellent - Clean, mirror finish, no signs of wear.
Bore Rifling: Excellent Rifling - Sharp lands and grooves.
Specific Condition Notes: Minimal markings from prior handling and use. Optic cut cover plate is included.
What's Included
• SIG Sauer factory hard case
• SIG Sauer safety instructions and warranty manual
• Two additional interchangeable grip backstraps
• Dawson Precision fiber-optic replacement rods
• One 17-round flush-fit steel magazine
• Three 21-round extended steel magazines with red followers
The slide is finished in Black Nitron/DLC with aggressive front and rear serrations and an RMSc-footprint optic cut for direct mounting. The sighting setup pairs a green fiber‑optic front with a black serrated rear, and the sights are drift‑adjustable. Sight radius is 6 in.
The black polymer frame features an LXG laser‑textured grip, a flared removable magwell, and interchangeable backstraps (S/M/L) for fit tuning. A MIL‑STD‑1913 dust‑cover rail with four slots supports common accessories.
Its striker‑fired system uses a flat‑faced, nickel‑plated trigger for a consistent feel. The modular FCU architecture is compatible within the P365 series and is made in the United States.
Capacity is up to 21+1. Included magazines are one 17‑round flush fit and three 21‑round extended steel magazines. Overall length is 7.2 in, height is 5.1 in with the 17‑round magazine, width is 1.1 in, and empty weight is 23.1 oz. Manufacturer’s part number is 365XF-9-BFO; MSRP is $780.