Are you currently allowed to bring privately owned firearms to Korea (Carroll)? If so what is the process?

I think this question is two questions.
1. Can you import weapons into Korea. The answer is YES. For Soldiers, it must be on your orders. So there is preparation work their.
2. If you import, there is storage standards, and that will be on base storage.

I read in USFK Reg it is allowed if weapon was on your orders. Then on USAG Daegu page I see it says dont bring a weapon. Then I find information about registering weapon 72 hours after arriving with PMO and storing it in unit arms room upon arrival. Hard to find a straight answer.

Uh, I’m not a SME. I don’t know the answer. All I know is that when my HHG arrived in 2011 the on post “customs” guy came and in my pro gear was some Magazines (M16/9) and he wanted to confiscate them. I laughed my ass off and told him to get the hell out of my room. He obliged.

I was an MP at Carroll and as much as you may not want to leave them stateside, it will be in your best interest. If you happen to get them to Korea, It will be up to your commander to sign an MFR to keep it stored in the arms room. Most commanders won't POF to be stored in an arms room because it makes inspections a pain. More thank likely you will have to ship it back and shipping a weapon back is going to be a pain out of Korea. We responded to a Soldier with a "Paintball gun" which was considered a weapon by the customs, they wanted us to confiscate it and have the CDR draft a memo to store it in the arms room. The service member end up giving it up for disposal rather than dealing with all the paperwork.

While PCSing to Korea in 1976 I was allowed to carry my personal handgun in checked baggage, (minus ammo), and upon arrival it was checked into the arms room where it remained until my PCS back to USA.
There was paperwork that should have been done beforehand but it wasn't as I wasn't aware of it.
This was at a time when security was not as strict and I was able to to carry a buck knife mdl.#110 on board in my pocket during four international PCS moves.
By the way there wasn't an issue made of me not providing proper paperwork witb my orders for bringing my fiream I was just educated on what I needed to do in the future.
Life was so much simpler and people were better behaved.

It’s been decades since I served there, but bringing a personal weapon into a country that severely restricts possession of firearms opens up too many possibilities of trouble. Despite you enjoyment of 3 gun, I think I would let your hobby rest until you return to CONUS....