I have often used non-drip caulking guns. The one I received does not drip in any way. It should release pressure when you let go of the handle. This one starts but goes away. The remaining pressure is about three quarters, with the product still being dispensed and you still have to press the release button. Other models I've used that work correctly do not require you to press the trigger. It can only be mine because, as I said, he starts letting go but doesn't finish the work.
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