Skip to 0.26. Optics ready slim Glocks?
Revolvers are having a renaissance...and sure I like em, I have 2, but 5 or 6 shot maximum...not for me except range only...not for self defence...unless you're feeling lucky...punk.
Perhaps he's referencing single stack Glocks?
Not trying to be a smartrear but, why respond here then?
I'm not into the optics on my hand guns but, thought some who are, may find this interesting. Always good to have choices.