Remington made these and were reasonably priced but not now. If you find one they will ask a giant price for it like the 5rd mags. I bought a couple on this site (repeater) that are stainless steel and of superb quality. If I remember right the guy was JReed from TN. Great guy that is just making them from scratch. I'm sure if is your request he could do a single shot for you. If I remember right the price of the repeaters was $59 which is a lot cheaper than I have found 5 rounders on gunbroker for the plastic ones and believe me they wear out. Should be able to make you a single shot for considerably less.