Just need some info. on a savage m720 riot gun, belongs to a friends - friend. Gun is in excellent condition, I'd say 98% with only flaw a crack in the forearm. Serial# 78xxx both barrel and receiver, has US and ordnance bomb stamps. Barrel is 20" Are these very collectable and sought after?? I haven't a clue I'm into carbines myself. Also what would a value on it going by my description?? Sorry I have no pic's to add Thanks, Gene