Calibers: 9mm or 10mm. Capacity: 11- or 16-round (10mm), 10-round (9mm). Barrels: 3.8” or 4.5”. Sights: Fiber-optic front with inter-changeable red and green filaments, fixed rear and optics-ready or HEX Dragonfly red-dot optic. META (Match Enhanced Trigger Assembly). Removable mag well. Ambi slide stop. Values are for the 9mm model; add 3% for the 10mm variant.