With the A-5 stock trigger there comes a point where you are fireing at the highest ROF possible, with the 2x trigger you go there and beyond to a higher rate. It is a nice feeling to have your A-5 sound like a machine gun. I also have some trigger mods in place. I use a screw as a trigger stop so it is adjustable. Just drill a hole where that little bump is where the trigger spring goes, and screw in a screw ( I had to mod my screw so it was the right length, too high and it will touch the bolt.) Next I didn't want the metal screw to wear on the resting place so I slide in thin metal plate to cover the plastic. It gives me a metal on metal feel. Next I raised the sear slightly by covering the approriate trigger plate pin with something thicker. I used an old piece of radio antenna that I pressed around it (I prefer the metal on metal), some people use drinking straws. If raised too much the sear will not catch the bolt completely, and you will need something thin. The next part is hard to explain, to adjust your trigger starting point to make it slop free, you need a tiny tiny set screw to drill on the trigger (itself) at the top of the bigger hole (of two holes). You will drill into the hole from above, so you can screw in the screw. You are actually makeing the hole slighlty smaller, and adjustable by using a set screw. Finally I got rid of my trigger wobble by applying a thin piece of plastic over my left trigger plate. I used packaging plastic off of my double trigger case, cut to size, and glued on. If it still wobbles do the other side or just apply a thin strip , If too much just sand down the plastic a little. Then just replace your trigger spring with a clicky pen spring cut to the same size, and use your old trigger spring as a sear spring. These mods made my trigger so light and make a super short pull. You will have to tinker to get it set just right, I give it a tiny extra bit of slack. Check out the A5OG for pics.
This trigger is great for making your stock A-5 faster with a lighter pull.