Finck is closely associated with Gibson Les Paul guitars and uses different versions of the guitar that are built from a variety of woods and equipped with numerous pickup combinations (in 2006 he was photographed at the New York City Gibson Guitar showroom collecting a Custom Les Paul Standard '58 Reissue for use on tour with Guns N' Roses). Many of them have been customized and he often moves the pickup selector switch from the top of the guitar's body, as he has said the standard configuration is obstructive. After re-joining Nine Inch Nails in 2008 he began using several other guitars on stage, including Jerry Jones baritone guitars (similar in shape to Danelectro guitars), Fender Jazzmasters, Fender Telecasters and Gibson ES-355s.