The coiled snake is ready to strike. The original use of a snake to represent the colonies used the motto "join or die", showing the snake segmented.
This one with the red stripes seems very cluttered. The red in the snake and the excessive detail in the snake are a detriment, I think.
One might also consider using the phrase "KEEP AND BEAR ARMS" instead of "SECOND AMENDMENT". It can pass as a description of the right as well as a command. Perhaps, even, "KEEP AND BEAR ARMS !".
To use the concept of the coiled snake, one would have to draw a new snake and rifle. There are some image composites floating around built from a picture of a striking coiled rattler, but they are hard to print with the clarity of a vector file derived drawing like the one on the EFAD cover.