Heckler and Koch 81001066: With the HK VP9A1 upgrades revolve around an improved trigger; grip frame and the controls. Featuring an enhanced nickel-Teflon coated trigger; adjustable LOP and customizable grip with included backstraps; high visibility tritium front sight with a clean, black serrated rear sight; flared mag well; improved ambidextrous controls; serrated surface on the frame provides a tactical reference point, recess cut in magazine case base. Includes two 10rd magazines, interchangeable backstraps and side grips.