The Chainaxe is the preferred weapon of the Khorne Berserkers.
It has a chain with monomolecular choppers instead of the cutting edge.
In this way its comparable with the common chainsword.

The Frag Grenade is the standard grenade in the 40k universe.
If it explodes it catapults dozens of razorsharp shrapnels which cut through armour and flesh. 
  
The Bolt Pistol is the little brother of the Bolter.
It has a decreased range, less rate of fire but the same penetration power. 
  
