What is the best way to do this- I want the right hand to be attached to the gun trigger handle. Then I need the left hand to grab the magazine clip and move it with the hand. Here is the problems I ran into. If I use the attached feature to the right hand that disables the link feature for the left hand to grab the magazine. And same goes for using the right hand to link to the gun won’t allow me to use a different link for the left hand to grab the magazine

Here is a video to show.
I first link the gun to the right hand, I then baked the animation so I can unlink the right hand but the animation is saved . I then go to frame where my left hand would be grabbing the magazine. I can’t link the magazine to left hand or any reach target. How do I grab the magazine?

https://drive.google.com/file/d/1Fls8CeinVNTQkBSfSaUdKdUb5xPJFok8/view?usp=sharing

Lets think about it. You want to detach a prop, which is attach to another prop as a sub-prop and do it on a timeline.
But Attach/Detach does not work with timeline. So essentially you may not link anything to the sub-prop, that is why it's grayed out.
What you do, is LINK "detachable" parts of the gun in the first place instead of attaching them (magazine in this case).

Then when time comes, you unlink it from the gun and link to the hand at the same time.
Hand moves down, places magazine in the pouch/pocket at which point you unlink it from the hand and link to the nearest bone (spine).. and so on.....

Thanks for reply. So I’m trying to see it in my head. So I have the gun with sub props,I need to remove the magazine from this parent( the gun) then link it to the gun. Then at the part of reload , link the magazine to the left hand and so on like your said.

- how do I separate a sub prop from main gun in cc4( I can do this in other 3d software but it is another step)

- I can still have the right hand linked to handle? Or in this case the right hand can use the attached feature since I would not be detaching the right hand?

Thanks for the help

Are you using one animation for that part? Would breaking the animation into smaller clips help you? If you right click on the animation in the timeline, you can break it up and still use it like a whole clip. I don't know if something like that would help you.
God Bless!

 how do I separate a sub prop from main gun in cc4( I can do this in other 3d software but it is another step)

It is already separated by mesh and automatically attached to Vector when you import it. In other words all gun pieces are sub-props and attached to the root prop Vector.
Go to frame 1, detach magazine in its "Attach" properties and link it back to Vector in "Linkage" properties.

Yes that makes sense. thanks

whats the best way to save the separated magazine position in relation to the overall gun? so then i can copy and past that value when i need to put it back to the gun

https://drive.google.com/file/d/1BBsQWhjkWxbxWVlBkJCiHBraIXeV_-Ko/view?usp=sharing

Duplicate magazine at frame 1. Attach one copy permanently to the gun and hide it.
Now when you reload, enable visibility to the reference magazine and animate the hand the way that actual magazine matches the position of reference just before you unlink from hand and link back to the gun.

If you wish a 100% precision, match with hand as close as possible, then at the same time you unlink it from the hand create a transform key for the main magazine.
Then scroll a couple of frames and use Align tool to match the position of the linked in respect to the attached magazine.
Tip: use different color for the reference for an easy match.

Sounds good, thanks