The Heckler & Koch VP9A1 Push Button F-B (Full Size) 9mm Pistol brings a highly requested American-style push-button magazine release to HK's updated flagship full-size striker-fired lineup. Built for duty, home defense, and competition, the "F" designation features an extended 4.53-inch barrel that maximizes velocity, sight radius, and overall downrange accuracy. The premium steel slide comes factory optics-ready with maritime front and rear serrations, making it effortless to directly mount electronic red dot sights. To optimize shooter ergonomics, the A1 frame ditches standard finger grooves for a smooth universal texture and introduces a nickel-Teflon coated trigger bar for a incredibly crisp single-action break. Standard with an integrated factory-flared magazine well, this high-capacity package ships directly with one flush-fit 17-round magazine and one extended 20-round magazine.