LC380 magazine is different than the LC9, the LC380 mag has a spacer inside the back of mag because the 380 round is shorter than the 9 mm and a shorter follower to fit the shorter space. Both mags will work in the LC380, but the LC9 mag is subject to feeding issues if the rounds are not positioned properly in the mag. The LC380 is shipped with the same manual, but there should be a supplement added to show the different parts and any other changes on the 380 model. The Ruger store shows both mags in the pistol accessories section.