I have many different stocks for my ARs which I interchange on a semi-regular basis. Being down in the hot and humid area of south Louisiana I have noticed a considerable amount of moisture which builds up in the tubes while being stored. I know they are Aluminium and plastic, but I still don't like it.
So, I'm trying to find a cap I can screw on to the end of the unit's while they are stored. I'd prefer a metal cap. If someone makes one already, great. If I have to buy it at Home Depot in the Plumbing dept, okay. If I have to get one machined I'll post the machine drawings if anyone else is interested.
See you tomorrow at Gunstock!!!