Sig Sauer P365 Fuse with ROMEO-RS Red Dot 9mm Luger 4.3in Black Nitron Pistol - 21+1 Rounds - The all-new FUSE from SIG SAUER brings full-size performance and shootability together with micro-compact concealment. Built on the proven P365 platform, FUSE delivers a 21+1 capacity in an impressively slim 1in wide grip module, creating a versatile crossover pistol designed for both everyday carry and confident performance. At the heart of the FUSE is its 6 7/8in, optic-ready slide-the longest in its class-providing an extended sight radius for improved accuracy, control, and overall shootability. A 4.3in barrel and fiber-optic front sight further enhance the platform, while the longer barrel helps maximize velocity and performance with modern defensive ammunition. The result is a true crossover carry: the handling, accuracy, and capability of a full-size pistol combined with the concealability of a compact. Born from the roots of the P365, the FUSE brings it all together in one highly versatile package. Aggressive Serrated slide and optic ready; 4.3in Carbon Steel Barrel With DLC Finish; Polymer LXG Grip Module With Laser Engraved Texture, 1913 Accessory Rail and Removable Magwell; Interchangeable Small, Medium and Large Backstrap Included; Nickel-Plated Flat-Faced Trigger; Fiber-Optic Front Sight With Black Serrated Rear Sight; ROMEO-RS Hybrid design featuring a skeletonized steel chassis, molded into a high-strength polymer housing; Premium molded glass ashperic lens for a distortion-free sight picture; High efficiency point source LED emitter with 8 individual brightness settings; Large side control button for easy reticle adjustments; Convenient side-mounted CR1632 battery tray with security screw for easy access without removing the optic from the firearm; Minimum continuous runtime of 20,000 hours (at medium setting, dot-only); MOTAC (Motion Activated Illumination) that powers up when motion is detected, powering down when inactive; Designed, developed, tested and assembled in the USA;