KTM the war, demand for repair works fell sharply and Trunkenpolz started thinking about producing his own motorcycles. The prototype of his first motorcycle, the R100, was built in 1951. The components of the motorcycle were produced in house, except for the Rotax engines which were made by Fichtel & Sachs. Serial production of the "R100" started in 1953. With just 20 employees, motorcycles were built at the rate of three per day. In 1953, businessman Ernst Kronreif became a sizable shareholder of the company which was renamed and registered as "Kronreif & Trunkenpolz Mattighofen". In 1954, the "R125 Tourist" was
Unertl Optical Company Unertl Optical Company Unertl Optical Company, Inc. was a manufacturer of telescopic sights in the United States from 1934 until 2008. They are known for their 10× fixed-power scopes that were used on the Marine Corps' M40 rifle and made famous by Marine Corps Scout Sniper, Carlos Hathcock, during the Vietnam War. John Unertl founded the John Unertl Optical Company in 1934 and the company manufactured military sniper scopes during World War II. The company was most notable for its MST-100 (7.62mm) and MST-150 (.50 caliber) 10× scope used by the USMC Scout-Sniper program and the first scope to use