If your a Sig fan, they are introducing all kinds of new stuff for 2015; including this weapon system below, suppressors, optics, and their own line of ammo.
http://sigsauer.com/Catalog/sig-sauer-silencers.aspx
http://sigsauer.com/Ammunition/
http://sigsauer.com/Catalog/sig-sauer-silencers.aspx
http://sigsauer.com/Ammunition/