Thanks for the pic. I like Carver products, but in this case, for my Gen5 G34 I think I'd rather go with the Thug Plug. They really don't add much weight, but they are certainly reasonably priced. Carver would normally say in the description if it was Carry Optics legal.
Damn you guys, I just went and ordered the Thug Plug on ebay. I like the fact that it's black instead of brass colored. It's from the GlockStore, but through ebay the shipping is free.