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Prior to 1986, Group Industries imported BAR parts kits and then manufactured and registered full-auto receivers for them. This produced transferrable guns which were subject to NFA registration and the $200 transfer tax - which was a much more significant sum at that time than it is today. Some of the potential customers were people (like reenactors) who wanted guns that looked and handled like real BARs but were not regulated by the NFA. To satisfy this subgroup of customers, Group designed a receiver which neither had nor could be adapted to have a gas piston, rendering the gun manually operated. It would fire from an open bolt, but had to be manually recocked after each shot. This was not legally a machine gun, and he made 68 of them.

When the Hughes Amendment to the FOPA passed in 1986, manufacture of new transferrable machine guns ceased, and Group Industries went out of business. Its assets were sold off, including a number of parts kits and unbuilt M.O.R. receivers. One of the buyers was Ohio Ordnance Works (then called Collector's Corner). They got ten receivers and after selling them, decided to develop a semiautomatic BAR for that same non-NFA BAR market. That gun ended up being the M1918A3, which is still available from them today.