I have seen some little oil capsules, probably 1/20 of an oz. that are a one time use thing.  I would like to find where to buy some.  I would keep one in each AR grip along with a pull through patch line.  Have checked, Midway, Sportsman's Guide, etc.  Can not find.

Brownells has 4ml packets of Friction Defense Xtreme gun oil that they sell in 10 or 25 packs.  I received a couple in a match a while back and placed one in an AR buttstock.  :D
Brownells Link Here

Thanks, just ordered 25 as they are on sale now.

Make your own with drinking straws that's what I do.

This.  Use a pair of heated needlenose pliers to crimp the ends.  Crimp one end, cut to desired length, fill with lube, crimp other end.  Win!

Go to NRA annual show (Atlanta 2017) and get free samples (multiple times).

I use these 3ml (refillable) dropper bottles. They work GREAT (I put synthetic motor oil in them, and store 1 in each pistol grip along with spare bolt and parts):

https://www.amazon.com/dp/B00EZIPEVI dropper&tag=vglnk-c102-20

I also have some ALG Go Juice 1ml (one time use) packs, but don't prefer them. Dropper bottles let you use what you want, when you want. One time use packets are open, and done (can't reseal or close) even when you only need a few drops. The dropper bottles can be used over and over and over again. Note: the dropper bottles I use are the ones I linked, and they work great, but they WILL evaporate oil slowly (not leak, but the plastic obviously must be porous enough that the oil slowly evaporates). Just an FYI for those using them. No problems though, since they refill easily with transfer pipelets.

https://algdefense.com/alg-go-juice-sample-packs.html


In case you don't like those from Brownell's OP. I would try this lube myself, but I'm stuck in a Frog Lube phase right now..............Don't judge me

I use old ejuice bottles.

Buy a bunch of these and fill them up with your lube of choice.  I have a big ass bag of them, filled up and ready to go in my cleaning bin.

Thanks for the link. The bottles are on sale for $.18 each.

This.

The amount of sample tubes of Slip 2000 I have is ridiculous.

Good find!