Montgomery County, Maryland Department of Police Weapons Law Summary
Montgomery County Maryland
Keeping Guns on Persons or in Vehicles
It is unlawful for any person to have either concealed or exposed, or to have in a motor vehicle where it can be readily used, any gun which uses explosive ammunition unless a person is engaged in a lawful mission where it is necessary to use a gun; or is employed as a special guard, special police officer, or special detective and has been deputized by the sheriff, or has been appointed a constable, or has been licensed by the laws of the state to carry a gun and is in the immediate vicinity of the premises of any employer whose occupation requires someone to carry a gun.
A person is allowed to carry a gun if he is a member of the military service or authorized as a peace officer; or is engaged in lawful hunting, drill training, or target practice, or is on property which the person owns or leases or with prior permission of the owner or lessee; or is going to or from lawful hunting, drill training, or target practice, or is engaged in any lawful transfer of possession such as carrying a gun from a gunsmith or repairman, provided that the gun is not loaded and the person is traveling on a public highway, or on property which he owns or leases, or on property with prior permission from the owner or lessee.
Ellis, when I search for the word "deputized" (which is in the above) in the below statement, I can't find it. I'm looking for where you've found the above excerpt (e.g. if there is a code/regulation number in MoCo). The case you've cited below, which I've only skimmed, seems to only bring up handgun and not long gun transport.
Please see brochure (Weapons Law Summary) #7970, Department of Police Firearm Safety Committee 100 Edison Park Drive • Gaithersburg, Maryland 20878 Updated 09/14. This is the source of the "Keeping Guns on Persons or in Vehicles" language.
Remember, Montgomery County tried to pull a fast one by restricting the sale of ammunition in 1983. This ban ended up in court and Montgomery County lost (state preemption). Is there another state preemption issue in Montgomery County involving the transportation of firearms?
MONTGOMERY COUNTY v. ATLANTIC GUNS, INC.
[snip]
The State Act regulates both loaded and unloaded handguns, and expressly preempts all local laws regulating the same subject. Bill No. 17-82 restricts the wearing, carrying, or transporting of loaded handguns. It is therefore invalid.
JUDGMENT OF THE CIRCUIT COURT FOR MONTGOMERY COUNTY AFFIRMED. PETITIONERS TO PAY COSTS.