Hi all-seeking opinions and advice in general about purchase of used shotguns. I have the chance to purchase a Mossberg 500, 20 gauge, about 20 years old but looks perfect. Wood stock 24" barrel, being sold by retired LEO so I feel I can trust it was well cared for. Do you all feel comfortable with purchase of used long guns, and does $250 sound reasonable? Is also including 26" VR barrel. Anything I should look for to be a red flag as far as the fore end, trigger mechanism, etc that would indicate I should avoid? Looking for home defense. Thanks-sarcasm and all insults on the 20 ga part welcome. I am a smallish female and am also considering bantam or youth model but not sure if this deal is 'too good to pass up'.