We’re working on a redesign across the board of our 10-round mag versions, testing out a few different options such as curved mags and double-stack single-feed. While working on the new version(s) we’ve paused production on the original 10 round mags so they’re listed as unavailable (for now!). We still have plenty of 5-round mags being produced and in stock, and are also working on the 22-250 caliber options now that we received the first shipment of customized springs we needed for them.