My buffer retaining pin broke today. I'd never previously considered that as a possibility but after a quick search, that apparently happens a lot. DucatiRon has one for me in case I decide to put it back in but for now, I'm going to run the gun without one and see what happens. Does anyone have any experience doing this or have information to contribute? I understand the GWACS lower doesn't even accept a retaining pin so I guess it's not critical to reliable function but is there any downside to it? Breaking the gun open and putting it back together is harder without the retaining pin but otherwise, I wasn't able to find a good reason to be in a hurry to put it back in.