KTM Two years later in 1962, Hans Trunkenpolz also died of a heart attack. His son "Erich Trunkenpolz" took charge of the company's management. As the company continued to expand, the workforce totaled 400 in 1971, and forty years after it was founded, KTM was offering 42 different models. Besides, KTM was able to produce motorcycles for the racing industry. During the 1970s and 80s, KTM also started to develop and produce motors and radiators. Radiators sold to European car manufacturers constituted a sizable part of the company's business in the 1980s. In 1978, US subsidiary "KTM North America Inc." 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