Is it possible? Yes & no. Marlin double action revolvers were made using S&W forging dies, so it may be possible to get correct alignment of the barrel & cylinder if you put a Marlin DA barrel on a S&W frame, and vice versa. That's kind of the long way around the barn, however. If you have a .38 DA S&W, with no barrel, you are much more likely to find a spare S&W barrel, than a Marlin. Other DA top break barrels by various makers wont fit. Ed.