I don't mean this as a knock on anyone, but it just drives me crazy when a guy can dump all sorts of money into their AR when it comes to the parts that make it look tacticool, but they want to skimp on the heart of the rifle.
There are plenty of good triggers out there. The RRA NM is a good bang for the buck, but the longevity of the FCG is questionable. There's just no telling how long they will last. I can say that I've never had one last more than 3000 rounds. It was mentioned above that an RRA kit has lasted over 500 rounds without problems. If you consider that a lot of shooting the number may mean something to you. I put 700 rounds through my AR just this past Sunday. For me, a trigger doesn't have a good track record until its seen 5000 rounds.
Some are also going to talk about getting their trigger done by Bill Springfield. Springfield does trigger jobs on parts after the hardening process is done on the parts. This is why his modified triggers have been hit and miss. On some, he cuts through the hardening and on some he doesn't. You just can't tell if this has happened. I'm not knocking Springfield, it's just a pitfall of the process. The same with the guy that posted above about going over the parts with a 3000 grit abrasive and going to a lighter spring. He may or may not have cut through the hardened layer of steel. If he did, his trigger job isn't going to last 1000 rounds.
The only real advise that I can give you is this....don't just go with lighter springs on a rifle that you will have to depend on. Sooner or later a light spring is going to give you trouble. Don't count on modified parts, for the reasons stated above. If you can't afford a trigger kit that was cut from the beginning and hardened after cutting to be what it is, just avoid it, and stay with what you have for now.
If you need a trigger for gaming, the Geissele Super Semi is hard to beat. There are also the triggers from Timney and Wilson. For my field rifle, I prefer the Geissele SSA or SSA-E because I need to be able to rely on these. What sets the SSA triggers apart from all others is that they attain their pull weight and feel through geometry, NOT the use of lighter springs. If you look at the springs that come with most kits and compare them to the springs that come with Geissele triggers, you will see that the Geissele kit comes with full power springs. This makes the FCG more reliable and safer.
Please understand that I'm not trying to knock anyone's equipment. I've just been there and done that when it comes to AR triggers and am just hoping that I might be able to spare someone some of my negative experiences.
Triggers are like any other piece of equipment. It's usually best to "buy once, cry once."
