The Sig Sauer P365-Fuse is a compact striker-fired 9mm built for home defense and range use. It is a current model, and its flush magazine holds 21 rounds behind a slide 1.1 inches across, the same width as the micro-compact P365 the grip module was stretched from.

Three magazines come in the box, two of them full length and one 17-round. A fiber-optic front sight sits over a blacked-out serrated rear, and the slide is cut for Sig's SIG-LOC optic interface. The grip module is LXG polymer, laser stippled instead of moulded with a texture, and an M1913 rail runs under the dust cover, so a standard weapon light clamps on without an adapter. The trigger is flat faced and nickel plated. The 4.3-inch barrel is carbon steel with no muzzle threads, and this version has no manual safety.

If you're cross-shopping, the Sig Sauer P365 X-Macro is 6.6 inches overall against the Fuse's 7.2 and weighs 21.5 oz, with a 17-round flush magazine, four rounds fewer than the Fuse holds. The Sig Sauer P365 XL weighs 20.7 oz on a 3.7-inch barrel with a 12-round magazine and a 4.8-inch grip against the Fuse's 5.1, which keeps more of the pistol behind a belt.