The Grex GCP650 Cordless 2” 23 gauge headless pinner is designed primarily to be a finish nailer for trim and molding applications and does not bump fire. You must release the trigger and lift the tool up each time. But you can still drive fasteners at a fairly fast speed as long as the safety goes fully up and down each time. Over the length of a work session, the tool can operate at about 1 shot per second. But several successive shots can be taken much quicker and it’s only limited by how fast you can operate the safety and trigger through each cycle.