Customer Rating: - No more hand cramps!
This thing really works great. Have been remodeling an old house and have been using alot of caulk. If you have alot of caulking to do, as I have, and using alot of liquid nails type adhesive, I would recommend buying rechargeable AA batteries and charger. If you don't have alot of caulking to do at one time, you will be fine with regular AA batteries.

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Customer Rating: - Caulk Gun
Really love it. I hate caulking, and this actually made it fun. Would recommend to anyone thinking of purchasing a caulk gun, well worth the money to go battery operated.

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Customer Rating: - Not great, but pretty good
It works pretty well, but I find it mildly annoying that when you let off on the trigger there is a several second delay of flow when you resume. It would also be nicer if there were a variable speed based on how far you squeeze the trigger so you could slow or speed up the flow without having to stop and change the switch. I'm sure this feature would add to the cost, so based on that factor alone this tool is a good buy and beats the hand squeeze models by a mile.

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Customer Rating: - Not Bad but Could Use a Few Tweaks
I HATE caulking so this tool was right up my alley. I've used it on a few projects and I'm generally satisfied -- it's pretty well balanced, you can move pretty quickly, lay down a good bead and finish up even a lengthy job without a cramped hand. And, it is hugely less expensive than the contractor guns and doesn't require over-sized tubes of caulk. However, the battery life is pretty short, it takes a while to get the flow going in a new tube and -- and this may be just a personal quirk -- the thing has a tendency to throb in your hand that kinda creeps me out. I'd still recommend it but I'm looking forward to a new and improved model someday.