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Title: If You Buy This You Must Be Crazy ! ! !
Review: I have this product and it is extremely overpricedand poorly designed. Using the gun with the smallcartridge is OK with no problem but trying to use thegun for the large cartridges is almost impossible!In order to use a large cartridge you have to put thecartridge in a tube and connect the tube to the gun.This is done by compressing a hard rubber "O" ring andhere is the problem. Using all my strength I cannotexert enough pressure to compress this "O" ring and assemblethe gun. Perhaps this is just the fault of the cartridgebut this should not happen. You cannot have a caulking gunthat will work only on certain cartridges.It is better to have two guns (one for small cartridgesand another for the large catridges). For the price of thisgun you can purchase two guns. You just have to look aroundspend some time. I returned this gun and now have two seperatecaulking guns that work great (and have money let over)!
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