Experiences with Henning +5/6 baseplates on Mec Gar 17 rd mags?

[no.vale.la.pena]

I recently found out about these extended base plate with spring and magazine follower for the Mec Gar or CZ factory 17 rd magazines:

https://www.henningshop.com/ManufacturersProducts.aspx?MANF=6823

Since these are fairly pricey I was hoping people could chime in with their experiences using them before I purchased one or two.  They seem to be a good option for USPSA as they, supposedly, fit the 141.25mm gauge.

Thanks,

[Luvdog]

Hennings stuff is all great quality.  Don?t hesitate to get them and don?t look back.

I?m getting another set soon.

[Bossgobbler]

With the 17 round mag, I get 23+1.
https://benstoegerproshop.com/cz-sp-01-shadow-2-carry-optics-3-gun-6-magazine-kit/