Why You Don't Need Gray Guns to Fix What Isn't Broken
I'll say it plainly. A DA/SA Sig is a compromise pistol, and you're paying Gray Guns money to make it slightly less of one. That's the entire conversation.
The double-action first shot exists for a reason. It's a safety mechanism. You don't like the weight or the break or the reset? That's a training problem, not a pistol problem. I've seen men shoot sub-two-inch groups at fifteen yards with a loaded chamber and a long, heavy trigger. They practiced. They understood what they carried. They didn't send their gun to a gunsmith to sand away the safety margins.
Gray Guns will smooth your action. They'll work the sear surfaces, polish the trigger bar, maybe lighten the DA pull by a pound or so and sharpen the SA break. It's competent work. You'll pay seven hundred dollars minimum and wait six weeks. After that, your P226 will be marginally more pleasant to shoot in a controlled environment. On a timer. Against paper. Where the first shot doesn't matter because you already had time to plan it.
But carrying that gun means the first shot is always double-action. Nothing changes that. A trigger job doesn't change that. So you're paying seven hundred dollars to make practice sessions feel better. That's a luxury, not a necessity.
Here's what should bother you about that P226. Not the trigger. The manual safety is small and requires a conscious press. The decocker is right there, which is fine, but you have to trust the mechanism. You have to trust the firing pin block. You have to trust a lot of intermediate parts. A 1911 trusts nothing but a cocked hammer and an engaged safety. Press the safety off, cock is still there, and you're ready. Your P226 sits there with a loaded chamber and a hammer down and you have to remember what that means and accept the DA trigger. That's the actual design problem. Not the trigger weight.
So. Should you do it? Only if you can detail-strip that P226 in under three minutes and you understand exactly what Gray Guns changed and why. If you can do that, you already know the answer: you don't need it. If you can't, sending it to a gunsmith won't fix your problem. Your problem is you're carrying something you don't know.
Train the gun you have. It works.