No, this Timney Triggers Ruger American Trigger will only work in a Ruger American Rifle. Depending on what 9mm carbine you have we may have a trigger that will work. Here are some options that might work depending on your gun.
https://www.opticsplanet.com/triggers.html?_iv_gridSize=120&_iv_parent-gun-model=ar-9
Yes, there should be no fitment issue.
Unfortunately it will not.
Yes, the Timney Triggers Ruger American Trigger model MPN:641C is compatible with all centerfire American model rifles.
The Timney Triggers Ruger American Trigger model 641C will work with a Ruger American Go Wild Rifle in 300 Win Mag.
No, you would need to use the Timney Triggers Ruger Precision Rifle Trigger, which fits all centerfire RPR models, and can be found by using the link below:
https://www.opticsplanet.com/timney-triggers-ruger-precision-8oz-1lb.html
The Timney Triggers Ruger American Trigger MPN: 641C is for Centerfire models of the Ruger American Rifles and MPN: 640R is for Rimfire models.
Yes, the Timney Triggers Ruger American Triggers will work with the Ruger Americna Rimfire Rifles. You will need model number 640R.
You should not have any fitment issues.
Yes, just make sure if you are using it for the centerfire models, you get the centerfire model: 2AN-TGR-TTRAT-641C
Likewise the rimfire models need the rimfire trigger: 2AN-TGR-TTRAT-640R