Is the top rail plastic or metal?

Proprietary lightweight, impact-resistant, glass-reinforced polymer

I have a round thumb nut on my brace. It's the same length as the original Allen bolt that came with it. Will it work or do I have to get another longer one?

I appreciate the thumbnut idea! And I understand the question now. Thanks for clarifying. The GB20 does add a bit of width and thus the bolt is longer to accommodate.

I’m hoping to run a suppressor on a Glock 40 with the glass breaker on. Will it clear?

It can. Depends on several factors. These are the dimensions (in millimeters) in case that helps:

The G7 OWB Holster that you guys make, is this accessory compatible with it?

It is not. With GB20 installed, you will not be able to use the G7 Holster.

With this installed would I still be able to use a slide mounted red dot or would this block the view?

It depends on the height of the red dot. Some include risers that allow you to mount it higher. You can also place the red dot on the GB20 rail

Any update on next back oder shipping date? 8.8.22

A week give or take until a limited run is back in stock

OK, let me rephrase that then. Is the glass breaker considered a barrel shroud?

That's not what we consider it. I can't comment on how the law views it.

Is this legal in Connecticut?

We don't provide legal advice. You should contact a local attorney with any questions about legality.

Will there be a version for the 20/21 large frame brace?

This is compatible with the 20/21

How far does this device stick off the end of a standard Glock? With hotter loads will this be a concern heating up and ruining the finish? Will this be compatible with longer slide Glocks such as the 40 or 41 used with the 20/21? Thanks.

"How far does this device stick off the end of a standard Glock?" - I don't know. "With hotter loads will this be a concern heating up and ruining the finish?" - It is not a concern. "Will this be compatible with longer slide Glocks such as the 40 or 41 used with the 20/21?" - It is compatible.

Still set to ship may 18?

No. Sorry. It's looking about 2 weeks from now.

April 20th 2022 release. Here we are apr 27th 2022 and the preorder hasnt shipped. Youll have to forgive me i dont soical media so if a delaynis posted there i do not know. Any clue when this will be shipping?

Launch dates are always estimates. The update on the GB20 is: They are out being powder coated. Once they are completed they will be packaged and shipped from our Israel facility to our Florida facility. We anticipate that they will be available to ship in around 3 weeks.