Knock-Knock

Knock-Knock is a melee weapon in Fallout: New Vegas. It is a unique variant of the fire axe.

Characteristics
Knock-Knock is a cleaner, more powerful version of the fire axe, with a matte black handle and a polished steel head with a longer fluke.

Special V.A.T.S. attack
Knock-Knock has a special move (Melee Weapons skill of 50) in V.A.T.S. called Mauler, which can cause knockdown, but costs significantly more Action points.

Durability
Knock-Knock can successfully strike about 545 times from full condition before breaking.

Variants

 * Fire axe

Comparison

 * ¹ Includes V.A.T.S double normal weapon damage.

Location
It is found in Camp Searchlight's Fire Station. Once you get the key from Logan, head upstairs and search the bathroom stalls, look in the right side corner of the stall with the skeleton to find Knock-Knock.
 * You can kill Logan, or you can complete the quest Wheel of Fortune to get the key.

Behind the scenes

 * While the standard fire axe is a Pick-Head Axe (also traditionally called a Fireman's Axe) intended for use in structure fires, Knock-Knock appears to be a Pulaski Tool. The Pulaski (named after its inventor, legendary US Forest Service firefighter Ed Pulaski) is a wildland firefighting hand tool that combines an axe and an adze. It is an extremely versatile tool that can cut, scrape, grub, or dig.

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