$189.50 which included a lot of accessories...In 1957...
Semi-automatic, 80 cal (20MM)...4-foot, 4-inch bbl...Able to penetrate 2-inch steel armor plate...Exceptional grouping rapid fire at 5/8-mile...
50-rnds (each rnd weighed 1/3-lb) for $37.50...
Price included:
Now I’m really depressed. LOL
I imagine those rounds would easily have penetrated the storage tanks in Las Vegas.