[trainershawn]

I'm concerned after elections next year the gun grabbers are going to be hard at it. I think they are using California and New York as test areas right now. Hopefully I'm wrong, but, I want to be prepared. I have a couple AR's and have purchased an LPK from PSA. Thinking of getting another LPK and I want to get a 1:7 upper from PSA when funds are available so I can push heavier rounds down range. Since I've never had any problems with either of my AR's, I'm curious as to what people keep around for spare parts just in case. I hope the gun grabbers don't gain any traction next year but if they do, I'm concerned that evil black rifles will be at the top of the list. Wondering what parts people see wear out or break the fastest. I want to be able to keep my rifles functioning for years to come, even if parts become available. Hopefully those in power will respect the 2A, but you never know.

 

[Smitty901]

Keep a spare complete lower kit most parts are interchangeable. Never hurts to have all the springs and pins you can grab ( they have away of getting lost).
Firing pins. If budget allows a spare BCG would be nice to have around.
If you own Gas Piston. Rod and extractors springs a spare rod would be nice.
BCG will likely never wear out.
More about having them than worrying about breaking, good lube and care they take a beating

 

[Nathan Jefferson]

Spare BCG or spare bolt (the extractor and springs is one of the main malfunctions that can/will happen, but even these are fairly rare and many rounds in between)
Extra recoil springs and recoil buffers- I've 'fixed' half a dozen ARs in the past year just by replacing the frankengun spring with the correct carbine or rifle spring. I have found that people will get stiff springs and heavy buffers, then combine them together causing malfunctions. they over think and over 'upgrade' it. (OK, one of them was mine too...)

I always keep an extra LPK or two on hand too, they seem to be the first thing to disappear when things get dicey.

 

[BigCheeseStick]

Other more reliable guns...

View attachment 2644

 

[jimb1972]

All the springs, and a spare extractor and pins, and a lot of mags.

 

[Smitty901]

Lot of places offer packaged kits shop around

 

[Seneca]

I've seen some of the spare parts kits and thought they was pretty neat, but can't remember exactly where I'd seen it or who made it.
I shoot the AR yet not enough to wear out parts anytime soon.
I like the AR I just shoot the Mini's and the M1A quite a bit more often.

 

[alterego]

In my humble opinions the only way to be sure is to buy two exactly matching units.

And the other opinion, I have owned four different AR rifles, One of them that I currently have has over four thousand rounds through it. Never had a jamb or a miss fire, this rifle was purchased in 2003 and I use it as a hunting rifle and drag it around with dirt and dust on it.

I recently seen a test in a prominent gun magazine where they took several brand new AR rifles and ran 10,000 rounds each through them in a couple of days and recorded how many failure to feed and how many misfires etc and then tore them down and bore scoped them to see what was the best and worst ammo.

In the entire run with multiple rifles and several ammo types there were only a couple duds and three or so failure to feeds, out of many thousands of rounds total.

Tulla was worst Silver Bear was second worst, and federal something was best as defined by internal throat barrel wear.

My point is, If you clean your AR and it is of reasonable mid range quality. You will not wear it out in your life time. You are kinda being silly if you think you need to keep a bunch of backup parts.

You likely will not be able to afford the ammo necessary to wear out a part in a newer high quality AR.

This is why they in my opinion are the ultimate fire arm.

 

[Prepadoodle]

I would say the big 3 would be extractor, extractor spring, and firing pin.

After that, it's not a bad idea to have extras of all your springs and pins.

 

[Smitty901]

The market place will provide. Unless you have some custom special trigger group they will fit in most cases.
AR-15 Spring Kit : AR-15 SPRING KIT | Brownells

AR-15 Ultimate Repair Kit : DPMS AR-15 ULTIMATE REPAIR KIT | Brownells

Bushmaster Ar - 15 Field Repair Kit - 1128194, at Sportsman's Guide

Rifle Gas System Kit : AR-15 GAS SYSTEM KIT | Brownells