Need help identifying parts/tools.... no idea what I've got here

OK, I admit it, I have a problem. An auction disease. It's way beyond ebay, It's the serious stuff, crazy auctions, boxes not labeled but tantalizing...I can't help myself and am in therapy.
Well, I was but dropped out as it took too much time away from pouring over auctions on the internet. I need help. I'm powerless. 12 steps just are not working.
Maybe you guys can help. What the heck are these things.
1. Some kind of barrel wrench? 9 inches long and 1 3/4 inches across the flats.. says GLC
on one side and G-max on the other. No idea what it is. If anyone has info on any of these items I'd appreciate it. They will all me moved over to the classifieds when identified.
https://www.milsurps.com/images/impo...13/03/U4-1.jpg
https://www.milsurps.com/images/impo...13/03/U3-1.jpg
https://www.milsurps.com/images/impo...13/03/U2-1.jpg
https://www.milsurps.com/images/impo...13/03/U1-1.jpg

2. This one really baffles me... no idea where to begin here, not marked, in new container
as above, 8 3/4 in. total length, rails are about 1 3/4, what appears to be mounting ears are 2 1/8 across...
https://www.milsurps.com/images/impo...13/03/U5-1.jpg
https://www.milsurps.com/images/impo...13/03/U6-1.jpg
https://www.milsurps.com/images/impo...13/03/U7-1.jpg

3. This one is spring loaded, the plunger is under pretty strong tension and it's marked on the back shown in one photo. It's 6 1/2 inches long, the plunger protrudes 1 1/8 inches from the body, the main body is an inch in diameter. Seems like a tool of some sort...
https://www.milsurps.com/images/impo...3/03/U10-1.jpg
https://www.milsurps.com/images/impo...13/03/U9-1.jpg
https://www.milsurps.com/images/impo...13/03/U8-1.jpg

4. The next one seems like a magazine loader, just a guess, maybe .45 caliber??
It's 3 inches high at the tallest portion of the body, 1 5/8 deep and 1 1/8 deep.
https://www.milsurps.com/images/impo...3/03/U12-1.jpg
https://www.milsurps.com/images/impo...3/03/U11-1.jpg
https://www.milsurps.com/images/impo...3/03/U13-1.jpg

Any help would be appreciated. Will move them over to classified section when I know what they are...
Bruce

#1 , just a WAG , but it looks like a water cooled muzzle gland wrench , but of a style I've never seen.
#2 , no idea
#3 , I'd say a recoil absorber for a machine gun , but don't recognise which.
#4 , mag loader for US M3 " grease gun " SMG.
Chris

Thanks Chris, would have never gotten the grease gun mag loader. The recoil buffer sounds possible, the spring pressure on the piston is quite high. Good info.
That second one is completely off my radar, maybe someone else here will recognize it, wrench of some type for the first one would be my guess as well.
Bruce

The first item is a repro of the wrench used to dismantel the rifle grenade launcher tube from the mounting end for a K98k rifle. G-Max is the company that used to make repro launchers and wrenches.
No idea what the 2nd item is??? The third may be as described, but I'm not sure? Does the but end screw off? If so it could be an oiler.
Sarge

The end with the stamped numbers on that 3rd item will not move and appears to be attached to the main body of the device. The piston or plunger is under strong spring pressure, very hard to depress that piston...

Thanks for the info on the wrench for the grenade launcher, probably not much of a market for that as there were probably many of them made.

Just a guess, is it possible that 3rd item is a hydro-spring recoil mechanism for something? I know something like that is used in heavy artillery, but I get the sense that this tube which houses the piston base is not
just spring driven but that there is hydraulic fluid in there. Complete guess but I started thinking recoil and found that hydro-spring recoil systems have been around for a very long time. This is obviously not that old.
Probably wrong but trying to make sense of this thing.....

The buffer is from an M60 machine gun. The mag loader will function on any single presentation mag that it'll fit. The other two? Have fun.

Thanks Jim, spot on, it hit me just as I was driving back from my office, I got one other M60 part in the parts lot and it finally made sense that it might be M60 related. You were right,
here's the part in the diagram. And me without an M60. Oh well...

https://www.milsurps.com/images/impo.../03/M601-1.jpg

Originally Posted by oldmartins:
And me without an M60. Oh well...

Only a few parts to go...

What do you want for the wrench? Some day I might find a repro launcher to use in reenacting.
Sarge

Ah, yes. I had an M60 20-25 years ago . That's how I guessed it. Knew I'd seen it but couldn't remember where.
Chris

Originally Posted by emmagee1917:
I had an M60 20-25 years ago

I was issued one in 1977...it was a faint memory...

Item #1 is the wrench for a repro German WW II K98 grenade launcher. G-MAX is a small private company of two or three guys in western Canada who had some quality repro German kit made offshore. They sold good kit but I understand long out of business.