The AR-15 is a whole bundle of little parts and mischievous springs, as anyone who has worked on their AR-15 knows all too well.
All rifles are also full of moving parts that are under an incredible amount of force as they launch projectiles by means of small explosions. Stuff wears out. What good is that awesome set-up if something breaks and you don't have a replacement? You will look awfully dumb with a $3000 rifle that won't shoot because a $5 part broke and you can't replace it.
Something else to consider. One of the features of the Biden gun control platform that I paid particular attention to in my post The Future Of Gun Ownership (Or Lack Thereof) was the proposal to ban not just the online sale of firearms and ammo but also gun parts.....
Biden will enact legislation to prohibit all online sales of firearms, ammunition, kits, and gun parts.
Kits and gun parts.
As I said in my post, that could mean just about anything. Slings? Scope rings? Who knows? What I do know is that a firearm with missing or broken parts is useless.
Anyway, it is best to start to address that ahead of time. To that end, American Partisan ran two pieces on the two main platforms talking about springs:
Both are great, short reference pieces you should read, depending on which platform you have or both if you have more than one.
This is something I am focusing on. I have a couple of kits from Rock River coming, their "Oh Shoot" kits, one for the AR-15 and one for the AR-10 platforms. I figured since I have a lot of their stuff, it makes sense to have their kits which contain:
ALL OF THE PARTS AND PIECES FOR YOUR LAR-15 THAT YOU ARE MOST LIKELY TO WEAR OUT OR LOSE AT THE WORST POSSIBLE TIME.
It also might make some sense to have a spare bolt carrier group, even though they are hard to come by and expensive. Really any of the parts that might A) wear out or B) get lost easily should be in your supplies.
There may come a time when you can't get spare parts you need or maybe you don't want to be buying gun parts using your credit card online where you know it will be tracked. My recommendation as always is to get what you need now instead of waiting until panic buying starts up.
Whether you live or die might very well come down to taking care of the little stuff as well as the big stuff....