This is a factory Glock 42 6-round extended magazine in .380 ACP.

Say goodbye to tucking in your pinky finger – this Glock 42 magazine features a finger rest for improved control and accuracy.

With a steel-liner insert encased in advanced polymer, this factory magazine is built to last. It also has military-grade feed lips and an anti-tilt follower for consistent and error-free feeding.

And for your convenience, it also has numbered witness holes on the back of the magazine.