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I know Hitachi is the preferred nailer for professional roofers although this seems to be close. You can easily see with the reviews this Milwaukee beats the Bostitch & PC hands down. I do not do roofing 5-6 days a week as the pros do but I can say on the one roof I used this Milwaukee I have nothing bad to say. When taken into consideration the cost difference between brands this is priced less then the Hitachi and right in line with Bostitch & Porter Cable. I'm sure I made the right choice. FYI, I return lots of inferior or even imperfect tools and this is a keeper no doubt.
I would highly recommend anyone who is seriously considering buying a roofing nailer, to purchase one of these. It is so simple to use and reload.
It was powerful, and always worked great. The first Milwaukee tool I bought was a Milwaukee Orbital Sawsall that will saw through anything with the proper blade.
The first Milwaukee tool I ever used was a 1/2" drill built in the '70s. Whether you are a "do-it-yourselfer" or a professional contractor, you'll find this Milwaukee tool to be everything you'd want in a nailer.
So when I needed a roofing nailer, needless to say, I knew Milwaukee made great tools. Let me say, I have not been disappointed with the 7120-21 Roofing Nailer.
It has never jammed. You won't be disappointed as long as you use the correct nails.
If you look at how the Maze and GripRite nails ride through the Milwaukee nailer, you would think that both the low-collated and high-collated nails would work. I probably experienced every problem that you could have. After replacing the quick-connect fitting, I never bothered to disconnect the nailer for all the subsequent problems, so I was probably putting my fingers at risk. They don't. There were unfinished coils of nails.
I have shot two coils of the GripRite nails without a problem. Also from Amazon, I bought 3,600 wire-collated 1 and 1/4 inch, 15 degree, "double hot-dip galvanized coil roofing nails" stock number CLWR102 from the W.H. He said that low-collation was what Bostitch roofing nailers used. It seems like the GripRite and Maze nails should be equivalent. He spoke about the differences between "low-collated" and "high-collated" nails. That is not true.
I am a big fan of Milwaukee tools, which is why I bought this nailer. USA made. I did that so much, I wore out the female quick-connect coupling. I happened to go to a trade show and I spoke to a Hitachi (not Milwaukee) representative. There were very frequent cases of when one nail would fire, but it would not pull the next nail into firing position. There were nails hanging out the nose of the nail gun when one of the copper wires separated (as it should) and the other wire did not. According to the Milwaukee instructions, if there is a jam, you are supposed to disconnect the air supply before clearing the jam. That was weird.
Maze Company, Peru, Illinois. I would also say that the collation wires were slightly farther apart on the Maze nails. The combination of a Milwaukee 7120-21 roofing nailer and the Maze CLWR102 roofing nails is a failure. I never used the bump-firing mode. It was utterly frustrating.
I bought some other roofing nails to make a comparison and to see where the problem was. Using different air pressures within the prescribed range by Milwaukee did not alleviate the situation. I bought it on Amazon. It is also true that I have not used low-collated nails from a vendor other than Maze. Since I have not tried wire, low-collated nails of lengths other than 1 and 1/4 inches, I can only speculate that they might also not work. All of the nails had full round heads. In the case of the Milwaukee 7120-21 roofing nail gun, that is not the case. The collation wires were much higher up (towards the head of the nail) on these nails as compared to the Maze nails.
I paid a premium for these nails because they are "double-dipped in molten zinc." From the description of the nails and from the description of the nailer (shown above on Amazon) there is nothing to make you think that these nails would not work. The label on the Maze box shows that their nails will work with the same Bostitch nailers. To be fair, I will admit that the fitting was not as new as the nailer. These were GripRite 1 and 1/4 inch, 15 degree, wire collated, galvanized, roofing nails from Home Depot, item number GRCR3TRC. The label on the GripRite box shows that their nails will work with the Bostitch RN45B and Bostitch N12B nailers. I now have a mess of Maze nails that I cannot use.
I bought this to do my roof and it didn't miss a beat. I have used other makes and models before and this ranks right there at the top for quality. Very good nail gun.
Removed it from the gun and went right back to work. Another winner from Milwaukee. Light and with a good balance. Seven squares went down with one miss, which was not the nailers fault. Hit a spike and bent the nail. It will match our green and orange nailers. Highly recommend it.
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