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Review on πŸ” High-Quality M1X1 5 Viton Ring with Advanced Shore Durometer for Optimal Performance by Jonathan Clark

Revainrating 5 out of 5

A must if you have a 9mm threaded barrel.

For some reason many barrel manufacturers do not include an o-ring in their products. When you fire a pistol, the extreme recoil weakens anything attached to the barrel. This 10mm ID, 13mm OD and 1.5mm sized O-ring fits and works great to prevent this.

Pros
  • Meets AS568A aerospace standards
Cons
  • Line is shorter than other picks