Know how to tune a rifle and read ejection patterns first - JP Enterprises Gen 2 Silent Captured Buffer Spring System

Before you buy, you should know what a good ejection pattern is and get the entire kit. Go to their website and use their selection guide to choose the right model. It will make tuning a LOT easier. Also highly recommend using this with an adjustable gas block. Once you install, smooth as butter and super reliable. If you don't know how to tune a rifle, then you aren't ready for this. To address common concerns, yes this will work with a 14.5" barrel or shorter, with a muzzle brake and an adjustable gas block.
Specifically though, it had issues with lightweight BCGs. Specifically with light primer strikes because even on the lightest spring and the most open gas setting, the bolt would bounce back just enough for a light strike. Spent a lot of talking back and forth with suppliers on this. I went back to traditional and grabbed a milspec full-auto BCG and my reliability issues were resolved. In fact, reliability went through the roof! You just REALLY need to know how to tune a rifle!