The KRISS Vector Gen II SDP (Special Duty Pistol) is a non-NFA semi-automatic pistol variant of the KRISS Vector platform. This model features a 5.5-inch threaded barrel with a black nitride finish and is compatible with Glock G17 magazines. The frame is constructed from advanced polymer composite material and includes a full-length mil-std 1913 Picatinny top rail.Key FeaturesThread Pattern: 1/2"-28 tpi muzzle threads for compatibility with standard accessories.Included Magazines: Ships with a 17-round magazine.Sights Type: Equipped with adjustable low-profile flip-up front and rear sights.