And I Thought Montana Was A Gun Friendly State

[NavyLCDR]

I would just ask a local LEO first though just to be on the safe side.

LEO are just about the worst people to ask for legal advice.

Also, the handgunlaw.us pdf doesn't say anything about open carry. Is Montana an open carry state and if so can you OC your gun in bars and restaurants?

Yes and yes.

http://www.opencarry.org/mt.html

Summary
Montana is a traditional open carry state. Localities are substantially preempted, but have limited power to prevent and suppress the carrying of concealed or unconcealed weapons to a public assembly, publicly owned building, park under its jurisdiction, or school, and the possession of firearms by convicted felons, adjudicated mental incompetents, illegal aliens, and minors.

Montana statute only prohibits carrying a CONCEALED handgun in those locations:

http://data.opi.mt.gov/bills/mca/45/8/45-8-328.htm

45-8-328. Carrying concealed weapon in prohibited place -- penalty. (1) A person commits the offense of carrying a concealed weapon in a prohibited place if the person purposely or knowingly carries a concealed weapon in:
(a) portions of a building used for state or local government offices and related areas in the building that have been restricted;
(b) a bank, credit union, savings and loan institution, or similar institution during the institution's normal business hours. It is not an offense under this section to carry a concealed weapon while:
(i) using an institution's drive-up window, automatic teller machine, or unstaffed night depository; or
(ii) at or near a branch office of an institution in a mall, grocery store, or other place unless the person is inside the enclosure used for the institution's financial services or is using the institution's financial services.
(c) a room in which alcoholic beverages are sold, dispensed, and consumed under a license issued under Title 16 for the sale of alcoholic beverages for consumption on the premises.