Aluminium adapter to fit inside 12ga bases/caps.
Can convert a 12ga holder into holder for 9mm, 9mm pak, or .209 primer.
- .209 shotshell primer
- 9mm – revolver style blanks (9mm diameter body with 10mm diameter flanged extractor ring)
- 9mm pak – automatic style blanks (9mm body with inset grooved extractor ring)