Complex sentence: There is a permitting requirment to purchase a firearm, and many locales require a permit applicant to justify the need for a firearm to obtain a pruchase permit, and issuing authorities have been known to arbitrarily deny firearm purchase permits.
Split into simpler sentences: There is a permitting requirment to purchase a firearm, and many locales require a permit applicant to justify the need for a firearm to obtain a pruchase permit. Issuing authorities have been known to arbitrarily deny firearm purchase permits.