TexasCHLforum.com

Sig's extended mags are still on backorder, but, the waits are not nearly as long as they used to be. I ordered via their website and got them in a little under a month.

It's probably better to call them to place your order. If you order via the website, they charge your credit card immediately, even if they're not going to ship for a month or more. If you call them to order, and speak to an actual human being, they don't bill you until your magazines ship (or so I was told...).