My choice for close range conflict at this time is my 12 ga. 870 - 18.7", 7 rnd extension, Fed. 00 - 9 pellets.
I had become really bored with AR's and gave my last one to my granddaughter's husband, whom I consider a grandson.
My first gun was a 20 ga. 870, my Christmas present from my parents in 1960. We lived in a small semi rural town in central Texas and I spent decades hammering morning doves during the seasons. I've owned SEVERAL 870's since and can operate them as fast a semi and in my sleep. They are part of my anatomy. I shot cowboy action for several years and have mastered the over-the-top reloads.
My neighborhood is a subdivision of Houston and shots would seldom be over 50 yds. My 870 is cylinder-bore and the last time I patterned it at the gun club, it put 7 pellets in the green silouette at 50yrds with three in center-mass 9 & 10 areas.
I have long range rifle if I need more distance.