How many {used by} are for {pistol} ?
How many people are using the {pistol} ?
SELECT (COUNT(?obj) AS ?value ) { wd:Q1907525 wdt:P1535 ?obj }
SELECT (COUNT(?obj) AS ?objs ) {
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#subject> <http://wikidata.dbpedia.org/resource/Q1907525> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#predicate> <http://www.wikidata.org/entity/P1535> .
?statement <http://www.w3.org/1999/02/22-rdf-syntax-ns#object> ?obj .
} 

What is the number of people using the pistol?