Briggs & Stratton?..........
Yes, the older Briggs and Stratton engines. I remember them from when I worked at Sears. First time I saw one, I commented to a co-worker (an old Sears veteran, 20-plus years), “Damn. Looks like a suppressor.” And he said, “Yup. They work pretty good as suppressors too, for a couple of rounds at least.”