This Chester County Armory listing is for a fully transferable Fleming Sear SEF HK Trigger pack. It is ready to be installed on your host Heckler and Koch family of weapons, and turn them into the select-fire machine guns and submachine guns that you really want them to be. This SEF pack is currently set up for 9mm and is fully clipped and pinned. It is in excellent overall condition. This select-fire sear pack is fully transferable. For more information on this listing or to view our other NFA and investment grade firearms, please visit our website at www.chestercountyarmory.com, or contact us via the information listed below. Chester County Armory West Chester, PA email: chestercountyarmory@gmail.com phone: 610-235-6155 www.chestercountyarmory.com