swingshot
I thought i saw these somewhwere, some years ago.

They were more like control devices (just pointy, no actual ball bearing) than glass breakers TBH.

Did i imagine it, or do they exist?

Can anyone point me in the right direction?

Please and thank you.
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Josh N
You can find aftermarket MT parts here, including glass breakers, can’t speak to the quality though... switchbladekits.com

https://www.switchbladekits.com/index.php?l=product_list&c=9
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DWScheel
I would NOT recommend the switchblade kits place, the guy running it is an absolute asshole. If you ask a question you will be ridiculed. There are no returns either. So, if you're trying to know if something will work, and cannot ask a question it's a gamble. Many of the descriptions are also vague and confusing. I've bought some screws from that place and they don't fit and are also made in China. 

I would recommend contacting Matt at  http://www.modelandtool.com

He will take the time to make sure you're getting what you want. He made some custom pivot bits for me. He made sure they worked. I think he does breakers also
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Josh N
Your definitely right about the guy. I was looking for a coil spring for a UDT and he wasn’t helpful at all. I wound up having to buy 3 different springs just to make sure I got one that fit... I didn’t want to recommend him, but it is the only place I’ve ever seen the breakers, so thanks for a better recommendation. 👍😊
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