Description
The Sig Sauer P365 FUSE (365XF-9-BFO-RXSL) in 9mm delivers 21 round capacity with a 4.3 inch barrel and factory mounted ROMEO-X SIG-LOC Compact optic for full size capability in a razor thin 1.1 inch wide grip module. This striker fired pistol combines a stainless steel frame with black LXG polymer grip, fiber optic front sight, and ships with two 21 round and one 17 round magazine for versatile carry and range use.
Key Features
Manufacturer part number 365XF-9-BFO-RXSL
Caliber 9mm
Capacity 21 rounds plus one in chamber with two 21 round and one 17 round steel magazines included
Barrel length 4.3 inches, carbon steel with black DLC finish
Frame material stainless steel with black LXG polymer grip module
Slide material stainless steel with black nitron finish and aggressive serrations
Sights fiber optic front with black serrated rear, co-witness capable
Overall length 7.2 inches
Overall height 5.7 inches
Width 1.1 inches
Weight 24.8 ounces with magazine
Action striker fired
Trigger nickel plated flat face
Optic ROMEO-X SIG-LOC Compact enclosed reflex sight factory mounted
Accessory rail 1913 Picatinny rail
Grip features laser engraved texture with removable magwell and interchangeable small, medium, and large backstraps
Special Features
ROMEO-X SIG-LOC enclosed optic mounts underneath slide using five point contact system for repeatable zero
Fully enclosed and gas purged optic protects lens from moisture and debris with aspherical glass
MOTAC motion activated illumination extends battery life
LXG grip module provides laser engraved texture in ultra thin 1.1 inch width for easier concealment
Removable magwell can be detached for slimmer carry profile or left installed for competition reloads
Extended 6.875 inch slide length improves sight radius for better accuracy over standard compacts
Interchangeable backstraps accommodate different hand sizes
Aggressive slide serrations front and rear for secure manipulation
Practical Benefits
High capacity 21 round magazines provide full size firepower in a pistol thin enough for comfortable concealed carry
Factory mounted optic eliminates slide milling and ensures proper zero from manufacturer
Fiber optic front sight provides fast target acquisition in daylight while backup sights co-witness through optic
LXG grip texture offers secure purchase without aggressive abrasion against skin or clothing
Removable magwell allows switching between fast competition reloads and compact carry configuration
Extended barrel improves velocity and accuracy over shorter compacts while maintaining manageable overall length
Three included magazines support training, carry, and backup needs without additional purchase
Picatinny rail accepts full size weapon lights for defensive applications
Thin 1.1 inch width makes this easier to conceal than traditional double stack pistols despite high capacity
The Sig Sauer P365 FUSE 9mm (365XF-9-BFO-RXSL) with ROMEO-X optic is a practical choice for concealed carry and competition shooting.


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