When the gunsafe gets tight
You might want to think about collapseable stocks or folding stocks. Guns can take up a lot of space depending on the optics and accessories you put on them. I’ve seen plenty of my friends go from 12 or 18 rifle safes to full size gun safes just because of the optics they had on rifles. One thing they never advertise when you are shopping for a gun safe is what kind of rifles it will hold. Cramming your guns in will only cause damage and make getting guns in and out a headache. Instead of worrying about having to find a new gun safe, you might want to think about spending a few hundred bucks on changing the stocks of your military style weapons to something that can fold or collapse.
The M4 Carbine rifle is not only a fast and effective CQB weapon, but a very easy to manuever carbine inside a vehicle. You can easily gain 30% more room in a gun safe by mounting guns on the wall of the safe if you can fit them and you probable will. I’ve seen friends mount short carbines on the inside door of a safe just because they could. If properly mounted, an AK with an Advanced Technology Stock side folder will probable mount right on the door and you may even be able to two if you can mount it properly.
Most of us probable got into the shooting world via a shotgun or 22lr rifle. Those seem to be some of the best instroductory firearms. You can learn the basics about shooting from a 22lr bolt action rifle and the shotgun is the most versatile firearm out there. Something like a Remingto 870 shotgun is normally available with an 18-28 barrel on it and can be found in 12 or 20 gauge. The shotgun can be used for pheasant hunting all the way up to deer just by altering the type of shot or using a slug. Depending on the sights you have on the gun, you may want to consider rifle sights if you plan on using slugs very often.
Back in the 1990s there was a lot of Eastern Com-Block guns coming into the Country. There were also a lot of MAK90s and SKS Rifles coming in from China. Not sure why there were so many Chinese guns coming in, but there must have been some house cleaning from the Militarys over there. You may be able to find a well made 7.62×39 rifle being made in the USA now, but they are pretty expensive and will cost you about the same as a new AR15 or more. Some of the nicest AKs are being by Arsenal Arms and they look and shoot great.