Gas Mods G.R.1 RDA | Review

Small in stature but big on flavor.

10 min read

Gas Mods G.R.1 RDA

Gas Mods may not be a manufacturer or brand that you’ve immediately heard of, but they have had a hand in producing plenty of atomizers currently on the market.

Their latest release the G.R.1 BF is an extremely low profile single coil RDA, it’s 22mm wide and only a miniature 21mm tall!

It features interchangeable airflow jets for an MTL or restricted DTL vape, and with its incredibly small chamber, it promises to deliver bundles of flavor.

Let’s see just how much flavor this tiny RDA can deliver.

The Good

Simple minimalist styling, extremely low profile, two replaceable airflow options, excellent flavor production.

The Bad

Can be prone to spit back if not wicked right, extremely small 510 drip tip, not for drippers.

The Bottom Line

The Gas Mods GR1 has come out of nowhere and taken our whole team by surprise. It is a flavor chasing squonkers dream; it’s extremely low profile, has exceptional build quality and produces some of the best and most intense flavor we’ve come across in a single coil RDA. If that wasn’t enough, it’s also incredibly affordable.



  • 22mm Diameter
  • Dual Terminal Post-less Style Build Deck; Top Mounted Hex Screws, PEEK Insulator
  • 4mm Deep Juice Well
  • Juice Flow Splitter in Center
  • Interchangeable Slanted Airflow Jets; Two 1mm diameter Jets & two 5mm wide jets.
  • Directs Airflow Directly Onto Coil
  • 24K Gold Plated Bottom Feed 510 Contact
  • 304 Stainless Steel
  • 11mm Bore POM 510 Drip Tip

In the Box

  • Gas Mods G.R.1 RDA
  • Standard 510 pin (BF pin pre-installed)
  • Spare o-rings
  • Spare post screws
  • Two Allen keys
  • Interchangeable airflow jets
Gas Mods G.R.1 RDA

When you look at all of the high-end single coil flavor RDA’s, they all have one thing in common – a minimal profile.

The Gas Mods GR1 takes this to the extreme with its 22mm diameter and 21mm tall frame. Yes, you read that right, it’s only 21mm tall!

Part of its diminutive stature is due to one of the smallest 510 drip tips I’ve ever come across, and it’s condensed chamber and build deck.

To maximize flavor, Gas Mods have cleverly created to airflow jets or funnels that can be inserted into the build deck to angle the air up beneath the coil.

Essentially the GR1 RDA is like a Wasp Nano on steroids.

Gas Mods G.R.1 RDA


When it comes to single coil atomizers and squonking, I love simple low profile RDAs.

The GR1 is without a doubt one of the smallest I’ve used.

But it’s not just it’s tiny frame that impresses me with this RDA, it’s also unfussy aesthetics.

The GR1 boasts simple and elegant looks; there’s no garish logos or branding to be seen on its externals.

In fact, the only place you’ll see the Gas Mods logo is on the top of the beautifully sandblasted build deck.

However, that doesn’t mean you can’t give the GR1 a different look, as Gas Mods have released a plethora of different colored top caps and drip tips. They all have a matte texture look to them which I think helps the GR1 looks a little more premium.

They are available singularly or in packs of three, with other materials like PEI or Ultem also present.

Gas Mods G.R.1 RDA

Build Quality

The standard top cap and drip tip that come with the GR1 RDA are made from POM, which has great heat resistant properties.

The top cap itself is incredibly thin and very lightweight. Even though it doesn’t feel particularly robust, I’ve had no issues with it chipping or cracking, and it does an excellent job at keeping the temperature down.

Which is a good thing, as the drip tip is so minuscule that your lips always rest on the top cap when vaping.

The GR1’s build deck has outstanding build quality, the type you’d expect from real high-end atomizers. It’s a stainless steel deck with a sandblasted finish, which looks great and also gives it a more premium feel.

There are two O-rings on the base of the deck that the top cap slides over. They seem to have just the right tolerances as it holds the top cap firmly in place but is still easy to remove, or twist and turn to line up the airflow holes.

The GR1 comes with a standard and BF 510 pin both are gold-plated.

Considering this is a budget RDA, the build quality really is exceptional.

Gas Mods G.R.1 RDA


I know we have seen airflow attachments and diffusers in other atomizers, but I can’t remember any using this style of slanted airflow jets, especially in such a small RDA.

It’s a very smart design and really does make a difference when it comes to smooth airflow and flavor production.

Build Deck9.5
Gas Mods G.R.1 RDA

The Gas Mods GR1 is a single coil build deck, very reminiscent of other low profile RDA’s.

It only has two post holes on opposite sides of the deck, so there’s only one direction you can wrap your coils. The holes on each post are also relatively small, so even though you can fit Clapton coils, any wire that’s extremely thick will be a struggle.

It uses hex screws that you tighten down from above to clamp your coil legs. The only minor irritation with this design is that you have to completely remove one hex screw to be able to slide in and position your coil legs.

The deck also features a small notch either side of the deck where you can place you coiling rod to make sure your coil is centered and in the perfect place for the airflow jets.

Overall it’s a reasonably simple deck to build on, and quite ideal for such a small RDA.

Gas Mods G.R.1 RDA


This is probably the most critical aspect when it comes to building on such a low profile RDA.

The GR1 as with other low profile RDA where your mouth sits so close to the coil is prone to spit back.

Therefore it’s essential that you do not under wick your coil and leave too much space for hot liquid to build up, and conversely, over wicking it will dampen the flavor.

Even though it’s a delicate balancing act, it is easy to place your wicks into the 4mm deep juice wells on either side, and there’s quite ample room for such a small RDA.

Gas Mods G.R.1 RDA


The squonk pin that comes with the Gas Mods GR1 RDA is gold-plated but also has a smaller feeding hole compared to other RDAs.

This small hole actually creates higher pressure, which means you are squonking more juice into the deck without really feeling it, which in turn can lead to a flooded deck.

Fortunately, the angled airflow jets help prevent excess juice seeping out of the side airflow. But you do need to be cautious when squonking.

I found that just a quarter press of the squonk bottle was enough to saturate the wicks without flooding the deck too much.

It’s advisable to try squonking the first couple of times with the top cap of the get a good feel of how much pressure you’ll need to apply.

Gas Mods G.R.1 RDA


This is undoubtedly the most unique part of the Gas Mods GR1.

There are two airflow jets or funnels that come with the RDA. The first regular airflow jet that has two 1mm slots each side and the other wider airflow jet is one slot measuring 5mm per jet.

It comes pre-installed with the regular airflow, and changing the jets isn’t the most straightforward process.

As it’s such a tight, compact build deck, you need to remove one of the posts. This is done by removing the Philips screw on the base of the build deck.

You can then grab each airflow jet with some small tweezers and pull them out. Lining each jet up to replace them is a little trickier, and I wished that Gas Mods actually included a tool to help you, but after a couple of attempts with tweezers they go in easily enough.

Once you screw the post back into place, each airflow jet should be pointing upwards out of the deck, and they are virtually impossible to move or dislodge once everything is together.

Gas Mods G.R.1 RDA

The Gas Mods G.R.1 is all about the flavor, and boy oh boy does it deliver.

The nature of the design with the close proximity of the coil to the mouthpiece and the angled airflow which allows air to reach your coils in such a focused stream is excellent.

It is a perfect low profile squonking RDA which produces warm, condensed vapor packed with flavor.

You just have to be willing to get the wicking just right with your builds, or you’ll get the occasional spit back which might run the experience a little.

Gas Mods G.R.1 RDA


The only way to describe the flavor production from the GR1 is ‘sharp.’

It really has blown away some other high-end low profile atomizers that I’ve tried in the past with the intensity of flavor it produces.

So much so that some of my usual juices were almost too intense for me to vape on, it’s like a whole new experience with each.

If you are a flavor chaser and like single coil RDA’s, you will love the Gas Mods GR1.

Gas Mods G.R.1 RDA


The GR1 is not going to produce huge clouds, but for such a small single coil RDA they are respectable.

The airflow is actually considerably smoother than I anticipated it would be from the side airflow jets.

Personally, I prefer the full open 5mm airflow jets installed as I think both are on par for flavor, but the wider jets help to produce more vapor. It’s also a looser draw, more of a restricted lung vape.

The only thing to be wary of as I mentioned before is the dreaded spit back of hot juice.

The first build I put on the Gas Mods GR1 was a 3mm ID coil fused Clapton, which fits just fine, but I was getting too much hot juice. I then toned it down to a 2.5mm ID coil, made sure wicking was on point and not only did it eradicate the spit back it was a smoother less restricted draw.

The main thing you need to bear in mind with such a small 22mm RDA is you cannot go too aggressive with your builds.


  • Minimalist design
  • Extremely low profile
  • Excellent build quality
  • Amazing flavor production
  • Replaceable airflow options
  • Easy wicking
  • Top cap remains fairly cool
  • Lots of accessories available
  • O-rings have decent resistance
  • Incredibly affordable


  • 510 drip tip is a bit too small
  • Can get spit back if not wicked properly
  • Not suitable for dripping


The Gas Mods GR1 is an RDA that’s small in stature but immense on flavor.

I didn’t believe it was possible for someone to create an RDA that can rival the Wasp Nano for affordability and then beat it when it comes to vape experience.

The replaceable airflow options are an excellent design choice.

The build quality is exceptional, as good as some high-end atomizers. I love the look of the sand-blasted deck, and they have got all the tolerances just right.

It has such a pleasant minimalistic design; it also has a stack of accessories available to help you freshen up the look and match your squonk mod.

If you’re a flavor chasing squonker, you need to get your hands on the Gas Mods GR1 RDA.


Build Deck


The Gas Mods GR1 has come out of nowhere and taken our whole team by surprise. It is a flavor chasing squonkers dream; it's extremely low profile, has exceptional build quality and produces some of the best and most intense flavor we've come across in a single coil RDA. If that wasn't enough, it's also incredibly affordable.
Marc P
Marc P
Marc has been an avid vaper since 2010. His obsession with new vape gear has led to developing his own overflowing vape room, and starting Vaping Vibe with Danny & Jules to help educate other vapers.

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The Gas Mods GR1 has come out of nowhere and taken our whole team by surprise. It is a flavor chasing squonkers dream; it's extremely low profile, has exceptional build quality and produces some of the best and most intense flavor we've come across in a single coil RDA. If that wasn't enough, it's also incredibly affordable.Gas Mods G.R.1 RDA | Review