L. James Sullivan

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Leroy James Sullivan
Nationality United States of America
Other names Jim Sullivan
Occupation Small arms designer
For other people named James Sullivan, see James Sullivan (disambiguation).

Leroy James Sullivan is an American firearms inventor. Going by Jim Sullivan, he is noted as a designer of several 'scaled-down' versions of larger firearms. He is largely responsible for the Ultimax 100 light machine gun. He also contributed to the Ruger M77 rifle, and the M16,[1] Stoner 63, and Ruger Mini-14 rifles (scaled from the AR-10, Stoner 62, and M14 rifle respectively). [2]


  1. ^ Ezell, Virginia Hart (November 2001). "Focus on Basics, Urges Small Arms Designer". National Defense (National Defense Industrial Association). Archived from the original on 8 October 2006. Retrieved 1 June 2014. 
  2. ^ "Defense Department Sticks With M-16s Despite Problems" (Transcript). Public Broadcasting Service. 2007-09-24.