That one looks to be obviously made for one armed use.
For some reason I grew up around a lot of bullpup rifles. In the 60's during my teenage years, quite a few serious groundhog hunters owned them. A high school classmate of mine had a really nice BR gun converted because he went with his dad (the local RDF mail carrier) to hunt groundhogs and it was easy to transport and not have to fool with the trunk. (His uncle was a factory shooter for a while and a gunsmith). Several other people had similar conversions.
Later on, it seemed that I never saw any for sale and finally deduced that they were not nearly as common as I believed. Sort of like the 69 Z-28 with the duel Holley setup. A friend just a few years ahead of me was the son of the local Chevy dealer and would get all his buddies cars at essentially cost. I remember one Friday night at the local drive-in I counted 13 of the dual 4 Z's sitting around. This in a very rural town of 1200 people. It didn't realize until many years later that this was a significant number of the total ever produced.
