The Sig Sauer P365 AXG Fuse in 9mm runs a 4.3" barrel, a 21-round Macro-pattern magazine, and the AXG metal grip module that steps the P365 into a heavier, flatter-shooting frame. The Fuse designation refers to the full-length slide profile that blends the P365 AXG grip with a longer-slide geometry for a longer sight radius and slower slide cycle, putting the gun in carry-plus-range territory. Gray finish on the frame and slide sets this variant apart from standard black P365 offerings.Sig's P365 line earned its reputation by cramming double-stack 9mm capacity into a grip frame most shooters thought was restricted to single-stack territory. The AXG metal grip adds weight where the hand holds, which flattens recoil impulse and lets the sights track faster between shots. Optic-ready slide cuts to the RMSc footprint, and XRAY3 night sights typically ship on this SKU for fast low-light acquisition. 21-round magazines give the shooter home-defense capacity without stepping up frame size. Good fit for the concealed carrier who also puts in serious range time, or as a dedicated home-defense pistol with crossover carry potential.