Gas block with gas tube installed
I was a bit skeptical at first about buying a gas block with gas tube already installed, but for the price I had to try it. When I received the four sets, I carefully checked for burrs and imperfections but found none. Then I blew through the gas tube to make sure there was good flow, then tried it with the interior gas hole stopped with my finger to check for leaks and found no leaks. After assembling one on the upper I test fired about 50 rounds and all was good. Most gas blocks I've put in would leak some gas where the gas tube goes in so the Gorilla ones must be either sealed or nice and tight.
Reviewed by: ho808 from Hawaii on 2/19/2019