a .22 or shotgun are good places to start if one doesn’t have a lot of loot. Good .22’s by brand names can be had for less than $200 and a Mossberg 12 gauge pump goes for around $300 on sale. Skip the tactical stuff if you have limited funds, they cost extra and we got by for 100 year without them.
I brought a AK 74 with two clips for $349 and 2160 rds. of ammo for $270 can’t hardly beat that!