Earliest Glock in a Movie

(that I know of) 1989 movie called Twister with Dillion Mcdermat (spelling?) old man in the barn talking about Jim, who got kicked in the head by a horse. He said Jim spent the next few years killing horses until he ate the insides of a Glock.Quirky movie I found on Hulu.com. Weird movie but I kinda liked it. The whole family was rich and nutty as heck