A simple 9mm chamber flag for chamber flagging purposes. Print bullet tip up with high or 100% infill at least up to the arm since it needs as much plastic as possible so it doesn't compress or get crushed. These were made to be able to be extracted/ejected but you may need to decrease vertical scale depending on your specific setup since the rim is slightly thicker larger than spec for durability. They extract out of both my G19 and P365XL with stock slides. The orientation does affect extraction so play around with it a bit to find what works. My Glock needs it above the slide and Sig seems to work in any orientation.