stock ion trigger-worse
ndz blade- I like the warrior better, but thats because the design.
Smart Parts Ion
evil pipe kit
Q-Lock feed neck
redz on/off asa
light pull, design, smooth, price. (I got mine for $15.)
None so far.
This trigger is definitely on of the better triggers I've ever used. It has minimum side to side wobble and has a very smooth pull. I also like the design of this trigger. The curve conforms to my fingers and allows me to shoot a lot faster. This trigger is also very easy to install. The only bad thing about it is that its not very adjustable, but I didn't feel the need to adjust it. It was perfect right out of the box.
This is a very good trigger for the price. I highly recommend it if you are looking for a good trigger but don't want to drop 30+ dollars.