The Springfield Armory Echelon 4.5F Comp blends full-size ergonomics with an integral compensator and direct-mount optics readiness for faster follow-ups and superior sight picture. Built on Springfield's serialized Central Operating Group and finished with a 4.5" ported hammer-forged barrel, this Gear Pac ships optic-mounted and includes extra magazines and a premium bag for a range-ready carry system. Includes the Springfield Armory Gear PacA(R)a |this firearm includes (4) magazines, Viridian RFX11 green dot optic, and premium pistol bag. The optic comes mounted and ready for the range. 9mm 17+1 flush / 20+1 extended 4.5" ported hammer-forged barrel Integral single-port compensator Optics-ready Variable Interface system Tritium U-Dot front / rear sights Serialized Central Operating Group chassis Springfield Armory Gear PacA(R): (4) magazines, Viridian RFX11 green dot optic, and premium pistol bag