Not in Seoul, but there's a place called Bebi Stadium in Bupyeong-gu, Incheon. Looks like renting a lane there when you have your own gear is 9,000 won an hour.
https://docs.google.com/document/u/0/d/11LUNcn9jtXLlJe5NUCWoPlZCuh5NcC4GZcRbXbOO_04/mobilebasic#kix.3dqkn3hvabk7
Oh, there's a compiled post like this too! (currently reading through it)
내가 제일 좋아하는 모델의 가스건과 악세사리를 샀고,늘 아킴보로 연사하는걸 갈망했는데 이번에 HK416A5(GBBR)를 사는 김에 같이 사버렸다
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is there a gun shop in seoul that does range rentals where you can use your own gear?
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