I just installed your 3 position tube I purchesed off ebay a couple weeks ago. Feels really nice, I wish I had seen your website before I got mine from eBay and saved me a couple bucks but oh well.
The only issue I had that delayed the install process was not being able to get the flexible ring out of my old recoil tube.
I had to order one, luckily they were in stock at Midwest Gun Works. If you offered these with your new recoil tube it would sure help out with installation.
Midwest part number is 70071 ($5) Freedom Fighter Tactical is $22 wtf? Lol