Re: AR-15 Trigger adjustment option's
I'm really surprised that guys on this site would even suggest light spring kits and such, or bending springs. Lighter springs can and will compromimse reliability and increase lock time.
As far as Bill Springfield modfied triggers go, I've had decent luck with some and not so decent luck with others. I've had at least three die an early death at about the 2000 round mark. The other's lasted longer, but I didn't trust them. The only way to guarantee that a trigger will retain its feel and performance is to have the cutting done before the hardening process. If you do any material removal after the hardening process, you run the risk of the "trigger job" work having gone through the hardened surface of the parts. A trigger failure usually manifests itself by causing the rifle to go full auto.
Don't go monkeying around trying to turn a FCG into something that it isn't. Just get a trigger system that was designed from the ground up to be what it is. If you want a single stage, go with a Timney, or if you can find one, a Chip McCormick. For two stage, look no further than Geiselle. SSA and SSA-E for non adjustables. Their three gun for sick/fast shooting (definitely not for a field rifle) or one of their Hi Speed models for a true match trigger. They are expensive, but you get what you pay for. I have one SSA-E in my goto AR that has around 7K rounds on it and it still feels like it did when it was new.
In all honesty, I do believe that Jewel may very well have been the very best feeling trigger I've ever had, but I've found them to be a bit on the delicate side. I quit using them.
