Has anyone polished their stock AR trigger?

I'm of the personal opinion that there are really only two types of triggers that see a significant improvement with some polishing and gun smithing:

1. Revolvers
2. 1911s

Every other gun I've fondled has seemed to only gain marginal improvement with polishing and such.

With the numerous affordable AR trigger options out there, I think it makes sense to just buy one to see a big improvement. Then again, you may as well give it a try yourself since it is a $0 cost to you to simply polish your factory setup. But here I'll plug my love for the Rock River Arms National Match 2-stage trigger - excellent quality for only $100.

Don't fool with them unless you really know what you are doing. The sear faces are hardened but only a few thousandths of an inch deep, very easy to grind through that material and wind up with a trigger that will turn into a liability. Too many good options for drop-in triggers that are better than you'll ever make a stock trigger and a much safer option.

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Too many good options for drop-in triggers that are better than you'll ever make a stock trigger and a much safer option.

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This is solid advice - of course.

If you want a polished mil-spec trigger, get one made by professionals like the ALG ACT - it is cost effective (roughly $40 over a mil-spec trigger if you get it with your LPK) and you don't have to worry about making a hash of it.

Lot of ways to save money on modding an AR but a trigger is an area I'd rather spend extra money on. RRA National Match 2-stage triggers are very good for the money. I have one and a Geissele SSA-E in my rifles.

I polished the mil spec trigger in my first AR, I did see some improvement. It is still heavy but it does get rid of the grainy feel while squeezing. It is not hard to do and did not take but a few minutes to complete. With that said I have since changed out that trigger for a Geissele and can tell a huge difference. I will be installing the mil spec trigger into my current build though. Go ahead and do it, at worst you screw it up and have to buy a better trigger.

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Go ahead and do it, at worst you screw it up and have to buy a better trigger

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That is not the worst that can happen

You can get a runaway. Which would be like full auto. Highly illegal and very dangerous.

I hear ya, full auto is badass. However, that is not the safe way for a full auto to operate.

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Don't fool with them unless you really know what you are doing. The sear faces are hardened but only a few thousandths of an inch deep, very easy to grind through that material and wind up with a trigger that will turn into a liability. Too many good options for drop-in triggers that are better than you'll ever make a stock trigger and a much safer option.

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+1