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The M4A4 Asiimov is a CS:GO skin from The Winter Offensive Collection and was introduced on 18 December 2013.
Steam Market
All CS:GO Asiimov Skins
Introduced: 18 December 2013
The Winter Offensive Collection
Introduced: 20 February 2014
The Phoenix Collection
Introduced: 1 July 2014
The Breakout Collection
Introduced: 06 December 2018
The Danger Zone Collection
Introduced: 27 April 2016
The Chroma 3 Collection