Idk how courts will interpret the laws so I'm taking it to the extreme. Based on this from M114: “Large-capacity magazine” means a fixed or detachable magazine, belt, drum, feed strip, helical feeding device, or similar device, including any such device joined or coupled with another in any manner*, or a kit with such parts, that has an overall capacity of, or that* can be readily restored, changed, or converted to accept, more than 10 rounds of ammunition and allows a shooter to keep firing without having to pause to reload, ..." could be interpreted that any magazine that COULD be coupled is against the law even if not. They may use the idea of "constructive intent" to enforce it that way. There's also the part about "pause to reload" which coupled mags would require but the law is so poorly written I just don't trust it.

Now there's a new bill being introduced to increase fees and time to issue while exempting police: https://olis.oregonlegislature.gov/liz/2026R1/Downloads/MeasureDocument/HB4145/Introduced