Okay, let me start by saying I have WAY too much time on my hands today . That and I don't ATV or snowmobile so maybe this is common knowledge in that community. JC Weaponry has a smokin deal on a silenced sig that was tempting enough for me to research if I (WA resident) could use a silencer in OR. That took me to a site that had some generic FAQ's that I was browsing and one of them stated that you can't carry a loaded firearm while operating an ATV or snowmobile and CHL holders aren't exempt. That of course got me curious and so I researched that to find: 821.240 Operating snowmobile or all-terrain vehicle while carrying firearm or bow; penalty. (1) A person commits the offense of operating a snowmobile or an all-terrain vehicle while carrying a firearm or bow if the person operates any snowmobile or all-terrain vehicle with a firearm in the possession of the person, unless the firearm is unloaded, or with a bow, unless all arrows are in a quiver. (2) The offense described in this section, operating a snowmobile or an all-terrain vehicle while carrying a firearm or bow, is a Class B traffic violation. [1983 c.338 §729; 1985 c.393 §45; 1985 c.459 §31a; 1987 c.587 §14; 1989 c.991 §15a; 1991 c.589 §1] http://www.leg.state.or.us/ors/821.html 166.360 defines loaded as: (3) Loaded firearm means: (a) A breech-loading firearm in which there is an unexpended cartridge or shell in or attached to the firearm including but not limited to, in a chamber, magazine or clip which is attached to the firearm. http://www.leg.state.or.us/ors/166.html Granted it's a class B traffic violation so BFD but if you flunk the attitude test with an officer he might choose to add that on to the ticket. Take if for what it's worth.