Learn from my mistake on Gunbroker

[GD2A]

Originally Posted by Shark1007

Shot my CCO yesterday. It's accurate as heck but the trigger is so light it occasionally double tapped. Upon careful inspection, it had a recoil buffer installed. That told me something. It was beyond filthy, the ejector was slightly damaged but functioned well. It has been rode hard and put up wet.

What did that tell you? I don't fully understand what those are supposed to do and why folks choose to install them. Thanks!