Mark R. Hollensen (1960 to present) was born in Richmond, Indiana, growing up there until he left in 1980 to attend the two-year Gunsmithing Degree Program offered by Trinidad State Jr. College located in Trinidad, Colorado. After graduating with a degree, he worked in gun shops located in his hometown and later in Orlando, Florida. He has written and submitted for publication a number of Gunsmithing related articles to American Gunsmith Magazine and currently owns his own gunsmithing business in Florida.