Good to know. With the +2/3 extensions, I don't know if they'll have any less tension on the springs, or more when they're fully loaded.
After I took some pics, UPS showed up with my muzzle brake, and another 19 round mag. I got the Taylor Freelance +0 baseplate directly from Taylor earlier today, and it took 5-10 seconds at most to swap them out. The muzzlebrake didn't go back far enough on the barrel to suit me, the 1st pair of screws were in front of the muzzle, so I cut the forend off at the back of the first Picatinny notch. Then I cut it at the front of the second notch, when I realized it's made like a vent rib barrel, and I had a little rib hanging off the end.

I didn't notice that when I had it in the vise, looking down at the top. I squared it up, good enough for government work, with a file, put the brake on and called it day.
Yesterday was when I finally got my gun. I went to get it a week earlier but was delayed, after going in Tuesday that week and the NICS system being down. So much for "instant" background checks. First it didn't work, then when I was delayed, the dealer never got an answer. After 3 gubmint business days of waiting they let me have it. I read about one state, I think it was Oregon, where people were saying they never heard of a dealer in that state letting a gun go until the transfer was approved, no matter how long it took. If the instant check was delayed and took six weeks, you waited six weeks to get your gun.
My new gun dealer only charges $15 to transfer a firearm. My older brother said Williams Gun Sights wanted $50. Well, that's a no-brainer, even for him!
I cut and filed the bottom rear of the rear sight base just enough to square it off. That way I could butt it up against the sling mount and have it completely on the receiver, instead of the front of it extending onto the handguard. Because of the way everything on the sight base is angled it sticks out just a bit past the receiver, but not the part that's clamped down.
P.S. When I was working on it yesterday, I took the front sling swivel off, since I didn't plan on using it. The small screw with captive washer has a Nyloc nut, just like the swivel did. I wanted something to plug the hole and it fit.