Montana: Pepper Spray Laws State Pepper Spray Laws Montana Pepper spray is legal in Montana and is considered a common and accessible self-defense tool with minimal restrictions.Status: LegalKey Restrictions/Size Limits:No statewide size cap identified.Primary Authority:Mont. Code § 45-8-322 Interactive State Laws Map Frequently Asked Questions (FAQs) Is pepper spray legal in Montana? Yes, pepper spray is legal in Montana for personal protection. Do you need a permit for pepper spray in Montana? No permit is required. Is there a size limit for pepper spray in Montana? No, there are no size restrictions. Can you carry pepper spray in public in Montana? Yes, except in restricted locations. Can you legally use pepper spray in Montana? Yes, but only in self-defense situations. Purchase Pepper Spray Quick ViewAdd to cartPOM Pepper Spray – Key Model $14.95 Quick ViewAdd to cartPOM Pepper Spray – MK3 Model $16.95 Quick ViewSelect optionsPOM Pepper Spray – Runner Model $14.95 Quick ViewAdd to cartPOM Pepper Spray – Clip Model $14.95