I have bought two.Both work fine and give a plenty good trigger pull.
For the price,they are a great improvement and a good value.I like the two stage.Its a good,safe trigger with plenty of sear engagement.The small increase in the second stage seems like a light pull and it is crisp.
You can get a better pull by spending quite a bit more,for example a Gisselle or Jewell,but the Rock River will give you a very satisfactory trigger for a good price.If you miss,it won't be the trigger that is the problem.