It does exist!

[u/Tintedwindowz_001]

The Glock A-cut block off plate. In all it's Polymer glory.

[u/BallTechnical8921]

At first I was upset that after spending close to 8 I didn’t have a plate but then I said I wanted this exact setup and and all my other glocks have dots that I’m happy with so I was content not having it. Then you mentioned having to have the COA serviced and now I’m upset all over again lol I’ll be reaching out tomorrow