It has been thirty-three years since I was in the park; I now live in Ohio. You couldn't have any type of gun, including air guns, in the park then and I hope not now. Talking to the park ranger is your best bet for complete information.
No you cant. I do know that there is a place at Lake Perris that might let you - you'd have to ask the rangers
I wanna say no, you might wanna check with the park rangers but error on the safe side and take it as no you can't shoot a BB gun or air rifle in the park.
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