What types of trigger can the SB-1664FN use? Support October 03, 2020 18:15 The SB-1664FN nailer can only use the sequential trigger. The nailer was not designed for the contact type trigger. Related articles Common O ring kits and trigger valve kits for Bostitch tools My pneumatic nailer / stapler will no longer drive the fastener completely; it seems to be losing power. Can this be repaired? I just purchased a Bostitch model BT1855K brad nailer. The trigger is stuck and will not move. What is wrong? Comments 0 comments Please sign in to leave a comment.