The doublestar trigger assembly was low-cost upgrade that made a huge difference. - DoubleStar Lower Parts Kit

The Doublestar trigger assembly I dropped into my Sig Sauer m400 is much smoother than the stock assembly. I had no idea it was going to make such a difference in the shooting. I dealt eith a rough stock trigger for years, believing that because trigger assemblies can be so expensive, that I'd have to deal with it if I wasn't willing to spend a lot of money. The Doublestar was a low-cost experiment. I just wish I had tried it sooner. Thanks Doiblestar.