Nugengtl continues with his videos on the TNK AK Hop-Up Unit designed for the GHK AK Gas blowback. Previously he showed how to install the unit on his GBB-R and this video is more of a shooting test to find out if the product is as good as what its maker says... "Sorry, I didn't perform a before test but IIRC the before was much worse with many fliers even after fully broken in."