Is there an extension made for a 229-1 magazine? I’m looking mainly for a little more room for my pinky than more rounds but a few more rounds are ok too.

Ie pierce grip on a Glock mag

Mec-Gar 229-1 17-rounder (15+1).

Also, Mec-Gar sells the base individually, but is oos at the moment. You can sign up for email notification.
https://mec-gar.com/shop/upgra...p229-1-sig-pro-2022/

Thanks for the reply.

But. Will they only work on mecgar mags?