Board Thread:General Nerf discussion/@comment-27306930-20190814014005/@comment-27306930-20190814232254

Not to be a nitpicker, but Slugs are a specific type of Stefan dart. There are two well known variants, the #6 and the #8 Slug. Their name comes from the type of weight they use, a #6 or a #8 Zinc Washer respectively. In typical Slug construction, a 1/2in self-adhesive felt pad is placed over the washer on the head of the dart. However the overall length of the dart is left to the discretion of the maker, and frequently varies depending on personal preference.

The ESPER series is specifically for half-length darts, like Short Darts. You might be able to use some slugs, if they're exactly half-length.