The best replacement for 2 stage trigger is single stage.

The best alternatives to 2 stage trigger are rated as following:
★★★★★  single stage
★★★★  1 stage
★★★  1 stage trigger
★★★  single stage trigger
  alg act trigger

Your alternative for 2 stage trigger is not listed? Suggest!
Speaking about 2 stage trigger, one probably shouldn't forget about slidefire.

Other search terms related to 2 stage trigger and their ratings are:
★★★★★ slidefire
You have in mind a companion for 2 stage trigger and it is not yet here? Propose!



Google Trends

Scale is based on the average worldwide traffic of 2 stage trigger in all years. Click on graph for more.
2 stage trigger
single stage
1 stage