43 CFR §423.30

1. (a)You may possess firearms, ammunition, bows and arrows, crossbows, or other projectile firing devices on Reclamation lands and waterbodies, provided the firearm, ammunition, or other projectile firing device is stowed, transported, and/or carried in compliance with applicable Federal, State, and local law, with the following exceptions:
   1. (1)You must not have a weapon in your possession when at or in a Reclamation facility.
   2. (2)You must comply with any prohibitions or regulations applicable to weapons in a special use area established by an authorized official under subpart E of this part 423.
2. (b)You must not discharge or shoot a weapon unless you are:
   1. (1)Using a firearm or other projectile firing device lawfully for hunting or fishing as allowed under § 423.32, or at an authorized shooting or archery range; and
   2. (2)In compliance with applicable Federal, State, and local law.
3. (c)You must not use or possess explosives, or fireworks or pyrotechnics of any type, except as allowed by a permit issued pursuant to subpart D of this part 423, or in special use areas so designated by an authorized official under subpart E of this part 423.
4. (d)In recreation facilities or areas operated through contracts or other agreements by a managing recreation partner agency from another Federal, State, local, or Tribal governmental entity, such as a State park, the laws, ordinances, and regulations of those partner agencies pertaining to possession and use of firearms shall be enforced by those partner agencies. However, Reclamation retains the authority to take necessary actions to safeguard the security and safety of the public and such Reclamation facilities, lands, and waterbodies.