WARNING! This product can expose you to Nickel, which is known to the state of California to cause cancer. Learn more
M1 Regulator
Monel Regulator
US$1,019.95
The M1 has an expanded performance range to meet almost any diving condition imaginable. Caves, cold, deep, enriched air – the M1 is perfect for recreational divers ready to extend their capabilities or accomplished technical and specialty divers. State-of-the-art metals meet proven Atomic Aquatics designs to deliver reliable performance to fulfill virtually any need or diving scenario.
COLD WATER. DEEP WATER. ROUGH WATER.

ENVIRONMENTAL. ERGONOMICAL. RADICAL.
The M1 design includes the same Atomic Aquatics ergonomic and performance features that rocked the dive world. Patented Atomic Aquatics exclusives like the balanced Jet Seat high-flow first stage piston, and second stage AFC Automatic Flow Control with Rapid Adjustment Knob combine to make the M1 not just extreme, but also extraordinary.
Designed For Challenging Conditions
Engineered by Atomic Aquatics for specialty diving – rec or tec
The M1 has an expanded performance range to meet almost any diving condition imaginable, whether Recreational or Technical. Accomplished specialty divers will appreciate this regulator designed to fulfill virtually any need or diving scenario. The M1 is built on the same platform as the world acclaimed T2 and B2 regulators.
M1 REGULATOR FEATURES
Hover on a hotspot below to explore the features of the M1 Regulator
WEIGHT
It’s a beast in the water, but not a burden for divers with 2.6 pounds first and second stage combined weight (yoke version).
M1 FIRST STAGE FEATURES:
- Factory ready for Nitrox to 50% or Oxygen mixes to 80% when special guidelines are followed.
- Chrome-plated Brass body and Monel key internal components.
- Atomic Aquatics exclusive balanced Jet Seat high-flow piston.
- Freeze-protected and factory-sealed to prevent outside contamination from silt and sand.
- Ports: 2 HP fixed / 5 LP on swivel cap
M1 SECOND STAGE FEATURES
- Designed for cold water diving featuring thermal heat sink and super-dry exhaust valve.
- Components made of precision-machined Brass with Zirconium plating and Titanium.
- Patented Atomic Aquatics Stainless Steel Seat Saving Dynamic Orifice maintains crisp like-new factory tuning and prevents damage during storage.
- Patented Atomic Aquatics AFC – Automatic Flow Control.
- Soft overmolded Rapid Adjustment Knob for manual detuning in special situations such as surf entries or octo use.
- High-flow second stage case and lever design for easy breathing at all depths and tank pressures.
- Surge-protected front cover for high current scenarios.
- Super-wide exhaust deflector to disperse bubbles for enhanced visibility.
- Dual silicone comfort fit mouthpiece with tear-resistant bite tabs – both comfortable and durable.
- Optional M1 color kit.
2-YEAR / 300-DIVE SERVICE INTERVAL
LIMITED LIFETIME WARRANTY
Extreme diving doesn’t mean extreme servicing. 2 years or 300 dives is plenty of time to log great adventures before recommended M1 servicing. Metal parts are warranted against corrosion for life. Period. The warranty is NOT contingent on proof of service.






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Maxwel Hohn –
Great for cold water diving! This is one of greatest preforming regulators I’ve ever owned. It breaths great, stands up to freezing conditions and is very comfortable
Lisa M –
I own the B2 and M1 and yes they are top quality, beautifully made, stylish and hardcore!
Paul F –
The M1 is an amazing reg which I’ve used for many tech dives.
Tom George –
The M1 is an extremely high quality regulator, that breathes very well. They look great and they perform great in any diving conditions. I’ve used them for ice diving, deep trimix dives, cave diving and warm water dives and they perform flawlessly.
Andrzej K –
Hello everyone,
I apologize for not leaving a review here just yet, but I would like to ask for advice from those who have experience with the Atomic M1 and B2 regulators.
I am currently deciding between the M1 and B2 but am unsure which one to choose. I live in Germany and dive in both cold and warm waters, so I would like to know which model would be more suitable for my needs.
Thank you in advance for any help!