2025Vests forum
Compatibility between Mark 3 arm socket block and Pro vest
What the thread found
- The Mark 3 arm socket block is slightly larger than the Pro arm socket block
- A Pro arm can be safely used with a Mark 3 socket block fitted to a Pro vest
- The Mark 3 arm fits perfectly with the Klassen vest
Depends on
- Only two positive data points reported; long-term durability or performance concerns not discussed
- The fit between Mark 3 block and Pro vest was achieved through modification or adaptation, not confirmed as standard