Mod replaces the old hammer into new created from the strongest material on earth!
You can buy it in Ammu-Nation.

Installation:
Run OpenIV and use Edit mode.
Replace all files from:
update> x64> dlcpacks> patchday3ng> dlc.rpf> x64> models> cdimages> weapons.rpf
with files from mod (of course with the same names).

Have fun!