The R75A was the last version of Colt’s commercial BAR, with 832 made between August and December of 1942 for the Netherlands Purchasing Commission. It was a derivative of the commercial R75 BAR, with a pistol grip, magazine well cover, and ejection port cover. The R75A added on a folding bipod and a detachable barrel functionality, albeit not of the most elegant sort. To remove the barrel, one first used the lever under the muzzle to detach the gas block from the barrel by sliding it rearwards. Then a tool or cartridge tip was used to pry open the barrel locking lever at the front of the receiver, which then allowed the barrel to be rotated about 60 degrees to unlock its interrupted threads and remove it.
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