Quote Originally Posted by Alpha-17 View Post
Question for the hive mind: the problem with the H&R (as well as Brownells, and other cheaper reproduction) buttstocks is they are hollow and very much sound hollow. Has anyone tried filling them with some variety of spray foam insulation? I know that early M16 stocks were "foam-filled for rigidity" and to reduce noise, and it would make sense that the same result could be accomplished with modern foam. Question is, would spray foam accomplish the task?
The one from H&R appears to be foam filled.