I used an Obsidian 45 for a while on my Z-5RS, with the 3 lug. It worked fine and didnít have any issues. I only ran it in the long configuration, though. 9mm isnít a particularly harsh cartridge, especially for a well built can like the Obsidian, so I donít foresee any durability issues. I would still be using it had the DA Wolfman not come out.