TONER

I have an Atomic B2 it's a good reg I was wondering what was the difference between the B2 and the M1

Brandy

Not sure but I think its the material used to make the internals?

lobsterman

I believe the breathability is the exact same but the material used is different. That said the Atomic regs are the top of the line.

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Pierce07

B2 has a stainless/brass internals while the M1 has a Mono/brass internals. M1 comes ready to breathe up to 80% 02.



http://atomicaquatics.com/reg_comparison.html

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Evensplit

The B-2 has a smaller and lighter second stage, which uses Titanium and stainless - the B2cannot be made safe to use with 80-100% O2 because of the titanium. For most of us this isn't a problem - I'm not using anything greater than 40% O2.

The M-1 was designed for tech divers. The second stage is made of Monel and stainless, which allows it to be used for mixes up to 100% (rated for 80% out of the box). The front of the m-1 is designed to prevent free flow in the event of a strong current or while using a scooter. The m-1 is also enviro sealed to prevent freeze up if you're crazy enough to go ice diving. The enviro seal makes it a very

Breathing performance of the 2 regs is similar, as are the prices.

Clay-Doh

I dont really have a brand preference on regs, but as said, its a nice move to get a octo/inflater combo. One less hose and item to have dangeling. Plus, you have your hands on your inflator at various times thruout the dive, so if you ever need to use it if your reg fails, you are much more apt to grab it quickly since it is a natural move going for your inflator. How many times, other than in training, have you reached for your octo??



Jus remember, if it's another diver needs a reg, you need to pass him the on in your mouth, and you use your octo/inflator. Some people use that as a con for them, but it is not a difficult thing to master. I have had to do it once at about 140 feet, and pass my reg to another diver out of air, and then put the inflator/octo in my mouth. Not difficult.

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BOHUNTER1

I was wondering what you and Jon were doing over there.... I saw him making what I thought was a hand motion and then you started sticking something in your mouth? It was not good viz...... maybe I was narced...... who knows.... :takephoto