High Quality Content by WIKIPEDIA articles! The Lightweight Helmet is the U.S. Marine Corps replacement for the PASGT combat helmet. As it is nearly identical to untrained eyes in shape to the PASGT, it is still called the Fritz helmet or K-pot (due to its resemblance to the German Stahlhelm). Though heavier than the Army`s Advanced Combat Helmet, its larger size also offers more protection and is lighter than the PASGT. Featuring a V-neck strap and improved fit, it is much more comfortable than the PASGT. It entered service in late 2004 and completely replaced the PASGT in 2009.