No movement here either, with either M or L backstrap.
Question for all you Glock Gen4 owners, how secure are the Gen4 backstraps??? do they flex, wiggle, shift or are they good to go?
.I have yet to install the backstraps on my gen4 Glock21. I find the grip just about perfect as is....for me.
If a strap were to be installed it would snap into the lanyard hole negating the installation of a grip plug.
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