If you have all the screws it will not be a problem. If you want to run them without it will be to long. The beauty of KGM the ability to help with recoil with screws out vs the little more sound reduction you get with the screws in IMHO. So if you get it made 1/2" short you will have the...
https://zanottiarmor.com/faq/can-the-safe-be-disassembled/#:~:text=Yes%2C%20the%20safe%20can%20be,as%20many%20times%20as%20needed.
Not the cheapest, it is a good option for carrying upstairs and fitting into a closet.
Precision underground is who I used for mine. I would also not hesitate to use scope chaps (I'm running one on my Dominus. The way the scope chaps are made would work better if younare running the can open.
It's their system, it's in-between carbine and rifle. That's why I'm including the gas tube. It took me a few tries to find the correct length. Had to get it from seekins if I recall correctly.