The Best Roofing Gun, Roofing Nailers Review.
1. For durability and performance look at the...
Bostitch RN46-1
Having used this gun for many years I can attest to it's performance & unattested durability. Performance wise, this roofing nailer is solid. Is it the fastest? No. I guess I haven't used the most current generation of this model I'm guessing that most things haven't changed. It was always a bit bulky, a little slow, but overall it performed well and lasted forever. These things could fall off the roof land on concrete and still work. If reliability is key, than this is you roof gun.
High Points:-Hands down the Most Reliable Roofing Gun on the market
-Performs Well
-Competitively Priced
Low Points:-Bulky, Heavy
-Not as fast (nails per second) as other models
Our Price:
160.00 and up for used2. For price point and performance look at the Milwaukee 7120-21 
Looking for a solid performer at a great price point? The Milwaukee Roofing Gun is a decent option for you. I can't attest to the lifespan, but I can say that it perfroms well out of the box. It has a depth of drive adjustment so you can set your nail depth on the fly. This is a pretty standard feature these days and is very nice. The best thing about this gun is the value, great price and performance for a brand name roofing gun.
High Points:-Price Point
-Brand Name
-Depth of Drive Adjustment
Low Points:-Still not as fast as the hitachi
-Possibly not as durable as the Bostitch
Our Price:
$149.00
3. For ultimate performance look at theHitachi NV45AB2
The hitachi is TOP GUN!This Roof gun has always been the best performer, it's the fastest gun on the market. It can also be high maintanance, yes with high performance comes high maintnance. It is definately the speed machine though. It's light weight and you can really put on some square per hour with this gun.
High Points:-Fastest gun on the market
-High qaulity Nail Placement and drive
Low Points:-Most expensive
-Higher Maintnance
Our Price:
$265.00