Given the input sentence, please extract the subject and object containing a certain relation in the sentence according to the following relation types, in the format of "relation1: word1, word2; relation2: word3, word4". Relations include: product/material produced; manufacturer; distributed by; industry; position held; original broadcaster; owned by; founded by; distribution format; headquarters location; stock exchange; currency; parent organization; chief executive officer; director/manager; owner of; operator; member of; employer; chairperson; platform; subsidiary; legal form; publisher; developer; brand; business division; location of formation; creator.

I believe certainly at the independent retail level a lot of firearms dealers will ensure that for the purchase of a new firearm they have at least a minimal supply of ammunition in the right caliber for that firearm, so they can support their certainly that first buyers and their new customers coming into their store.

Answer: industry: minimal, retail