30MS OP-03 オプションパーツセット3 (メカニカルユニット)

The arm and leg reconfiguration is way more flexible than I expected, so swapping loadouts between sisters takes no time at all. The plastic parts fit snugly but still pop off cleanly when I want to change poses, which is a win in my book.

Finally got these for my 30 Minutes Sisters kit, and the ability to swap arm and leg parts between different models is exactly what I needed. The plastic feels sturdy and the joints click in securely without being too tight.