Glock magazine question?

[tpaw]

I've noticed on some Glock 26's and 27's, that the bottom of the magazine is not flat, but has a lip on the front of it for an added finger groove. Is this optional, and if so, where can I purchase it. I have a big hand, and the extra finger groove would be helpful.

 

[jungleroy]

I think I found what you are looking for, I believe it to be something like a Pierce finger extension magazine base replacement.
I hope this link helps.
http://www.gunaccessories.com/PierceRubberGrips/index.asp

 

[tpaw]

jungleroy

You hit the bullseye! Thanks.........