MAC-11
The Ingram MAC-11 ( Military Armament Corporation Model 11 ) is a subcompact machine pistol/submachine gun developed by American gun designer Gordon Ingram at the Military Armament Corporation ( MAC ) during the 1970s in Powder Springs , Georgia . 
<triplet> MAC-11 <subj> machine pistol <obj> subclass of <subj> Gordon Ingram <obj> designed by <subj> Military Armament Corporation <obj> manufacturer