I installed a lighter striker spring and aftermarket trigger in my Glock 42. The trigger return became very soft and sluggish. After some searching, I found this spring and order it. When installing it, I compared it with the stock and they seemed almost the same. I was ready to be disappointed. That all changed after I installed it. The trigger return is very pleasant and confident, pushing on your finger. This is way better than the original trigger feeling, before any modifications. All and all, this is an amazing product. If you have a compatible Glock, you need this spring. Just buy it.