銃 is one of the most commonly used Japanese kanji, and it also has a lot of special readings in addition to the standard onyomi and kunyomi readings.
ONYOMI 音読み
つつ tsutsu
KUNYOMI 訓読み
ジュウ juu
Examples
警察は簡単に銃を使ってはいけない。Police can’t be trigger happy.銃を私に向けるな。Don’t point your gun at me.彼は銃を下に置いた。He laid down the gun.男は刑事に銃を向けた。The man aimed a gun at the detectives.彼は僕に銃を向けた。He leveled his gun at me.彼は肩に銃を担いだ。He carried a rifle on his shoulder.彼は二度と銃を使えない。He can’t use a gun again.兵士はその男に銃を向けた。The soldier aimed his gun at the man.彼らは銃で武装した。They armed themselves with guns.ビルは銃で殺された。Bill was killed with a gun.