The RMJ Forge Berserker is a custom(non-production) tomahawk made by RMJ Forge for 5.11 Tactical. It was commissioned by 5.11 for Kyle Lamb of Viking Tactics.
According to Military Times Gearscout:
The Berserker is made from differentially heat treated 4140 steel. The handles are 3D machined micarta, laced with 2mm accessory cord and laser engraved with Viking runes. RMJ plans on adding the Berserker to their product lineup, though the specs may change a bit.
I love Tactical Tomahawks because of the amazing fusion of things both old and new and the Berserker is a perfect example!
If you want to see it in production soon, be sure to let the guys at RMJ Forge know…