[MERIT]

The grenade is just a grenade. No special symbolism, no military history, no short-fuse temper, I just like it.

The Alpha/Omega corresponds to the bible berse. Revelation 1:8 "I am the Alpha and the Omega. The beginning and the end. All who was, all who is, and all who will ever be, the almighty."
It fits my theory of life. The end of one thing is just the beginning of another. With the first and last letters of the Greek alphabet connected, it symbolizes that death (the end) is just another part of life (the beginning).