First lets start with saying i Love Makita tools and have just about every 18v and 36v tool thy put out. I had to return this after a few uses. I am not an expert i work on a lot of projects around my house and rental properties.
I don't know who designed this caulking gun but i bet they have never used one in their life! No caulking tube piercer! no hook to hang while working on a ladder! You have to use a nail or an older model caulking gun to pierce the tube of caulking your going to use. You can not just squeeze the trigger the over pressurizes the tube it blows out the back. I will say that i am really disappointed with this product.