This is the Triple K Jennings J22 .22LR 6-round magazine.

Keep your Jennings J22 locked and loaded with this high-quality magazine from Triple K!

Pairing steel construction with an anti-tilt polymer follower, you’ll find this magazine delivers superior durability and reliability. Additionally, the side-facing witness holes allow you to always know exactly how many rounds are left. 

Whether you need a few spare magazines for the range or to keep in your bug out bag, Triple K has you covered!

At only six rounds per magazine, you might as well order a few!