Yeah, that turned me off from buying a TacSol upper for several years. I saw them when they first came out and thought they were cool as heck.
I am a big fan of the Ruger autoloaders. I have owned one since I was 9 years old and probably have 4-5 of them now. When I saw those uppers I thought, oh wow, I have to get the short one and the long one and the threaded one..................... But when I found out that you had to get them through a dealer it kind of killed the whole thing for me.
What ended up happening for me is that a guy I work with decided to buy a suppressor, so he wanted to get the threaded upper. I told him that I would like to get one but I liked the red color but they only make the threaded versions in black and green. So he called TacSol and they told him they would be happy to make a couple in red, but it would take awhile. If we were willing to wait, they would do it. So, I told him to order me one. Long story short, he did all the leg work and all I had to do was show up when it arrived and pay for it (along with the yellow form, of course).
I shot mine yesterday along with that real long Mk.II in the picture above. The light little TacSol upper is a joy to handle.
As for the stock, I mentioned earlier that I really don't think it does much for you. It is a neat gimmick but that is about it. That Glock I have in the second picture was a complete and total waste of money: and it was a pretty decent amount of money. I got the idea at a gun show. I was looking at Artillary Model Lugers and said to a friend that I was with, wouldn't it be cool if they had a modern day artillary model handgun. He said, they do, a Glock with one of those big stick magazines holds as much ammo as a Luger snail drum magazine. And then you get the stock................. So, the wheels started turning. I registered the Glock 34 as an SBR and bought all that garbage you see in the picture (I already had the AAC Evolution 9 suppressor). That stock is a POS. It flexes when the gun fires. When you are using the stock, the rear sight looks like it is a foot wide because your eye is a lot closer to it than it normally would be. Anyway, long story even longer I consider the whole thing to be a total waste of hard earned money. I put all that stuff on the gun a couple times but 99% of the time I just shoot the Glock with the suppressor which is a GREAT set-up. Runs flawlessly, accurate, and VERY quiet.
Also, FWIW, I realized that putting stocks on handguns was something that they did before the advent of the carbine. Putting a stock on a Luger, or 1911, or whatever isn't anywhere near as good as having a .30 M1 Carbine, which in turn isn't anywhere near as good as having an M4. So, it is an idea whose time has come and gone. Interesting for historical purposes. Kind of cool to try a few times when you are out plinking. But, it doesn't have a practical purpose IMO.