Excellent trigger! - ALG Defense ACT Advanced Combat Trigger for AR-15/AR-10

This is what I used in my first AR-15 build. It's a very crisp and smooth military style trigger. The polished surfaces really make a difference.

To the reviewer that complained about theirs rusting, yes, stainless steel can rust. Especially if you throw it in a drawer for 4 years. I'm guessing it was dry and had no grease on it.

There are over 150 grades of stainless steel and some are more prone to corrosion than others. Generally, the higher the chromium content, the less likely the steel will rust. However, over time, rust can and will develop on stainless steel. Each component of the ALG trigger is made from whatever material will allow it to perform under normal combat circumstances. Throwing it in a drawer for 4 years without taking proper storage precautions is just asking for rust.