hometheaterman,
I got me one of them Rohm RG10s, .22 Short. It is cute as a button, and it is a clever design. It appears to be well-built, but... the barrel starts to wiggle, after I fire a couple of cylindersful of Super Colibris (very low-pressure rounds- NO gunpowder in them!).
I have no experience with the RG24, but I can relate what I have heard about the Rohms, in general. Rohm, a German company, appears to have been, and still is, in the "signal gun" (training dogs; tear gas; air guns) business. I will guess that their firearms manufacturing efforts were an extension of that business. I believe that the cartridge arms were, essentially, upgraded signal guns, and that caused longevity problems. The Rohms sold for really low prices, and that was a selling point. The smaller Rohms (like my RG10) were outlawed for importation by the Gun Control Act of the late 1960s. RG Indutries was set up in the U.S.A. (in Florida, I think) as a distrubutor/ manufacturer. This may have been a way to circumvent some of the GCA, by puting together the guns in the United States, instead of importing whole guns from Germany. Many of Rohm/ Rg's guns can be found with other company's markings on them. I guess that Rohm would relabel them, if you paid them enough $$$$$ to do it!
There seems to be a general concensus that the higher-numbered models are better guns than the lower-numbered models (e.g.: RG10-versus-RG66, for example).
What I understand about the Rohm/ RG guns is that they are prone to failure of functioning, as opposed to failure that results in a safety hazzard. In short: they don't usually blow up, they just malfuntion, due to poor quality control & inferior materials. I guess inferior materials (zinc/ soft aluminum) is probably the actual reason they fail.
I believe they stopped making guns in the 1970s, or 1980s. The highest model number that remember seeing is "RG66". It was a Colt Single Action Army clone, that many people actually find is a decent gun.
I would not shoot any high-velocity ammo through that RG24. You could accelerate the wear & tear on the gun, if you do. Besides, I do not know if they can tollerate those rounds, at all.
I like oddball guns. I wish the Rohm guns were a little more durable, 'cause I would love to have a few more of them, and know that they would last a little longer than many people report that they actually last. They are neat guns.
BigLoop22