Sure, the trademarks are protected but a clone rifle could be sold under another model name, so long as all patents are expired. Call your Ruger 10/22 clone somethign else, like a 9/11.Op, Your question is really too broad. Are you asking what guns can you copy? For your own use you can copy pretty much anything as long as you follow ATF guide lines. You can't put Ruger 10-22 on your copy though, etc......