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Gas rifle?

3652 Views 33 Replies 8 Participants Last post by  Cheese Man
What do people use for your guns? I'm thinking of buying a gas rifle, but always heard things like

"So unstable FPS"
"When it's warm, it give a FPS boost"
"Winter? Not working" (I'm living in norway)

So can anyone explain what I want to have if I going for one?
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Im not a big techie on gas seeing as I am only just starting to touch base with this topic. But I am very aware that many gas user's run a HPA rig to boost shot consistency. I'd ask Wolfgeorge or Reezo as these members can definitely answer ALL your questions on the topic of gas.

Thanks for the tip
Ok here comes my own personal opinion, gathered and constructed from the ground up by mixing powerful elements when it comes to learning:
- Listening to suggestions, guidelines and insight information from experienced users
- Asking questions rather than doing guess work
- Being careful and respectful towards the rifle and DIY stuff
- Spending quality time testing, shooting, gathering data and analyzing it

I own three gas rifles/platforms:
Primary: G&P WOC SR-15 URX SBR (GBB)
Secondary: KSC P226 PTP NS2 (GBB)
Special Purpose: Tanaka M40A1 PCS (NBB)

The only "project rifle" in the list is the Tanaka M40A1 PCS, which is heavily upgraded. The other two platforms are left at their stock stage or 95% near-stock.

I don't know if your question relates to gas guns in general or specifically in the sniper world of I will try and give you an answer that is a jack-of-all-trades :)

To me airsoft replica guns are just gas..I would never go for a spring or electric gun. I try and keep the experience with the gun as close as possible to the real thing and I think gas guns relatively deliver the most realistic experience from the outside and the inside.

As with every airsoft gun type, gas has its cons too, and I'll focus on these rather than saying all the good stuff, which you probably already know.

Consistency in gas rifles depends on the gas rifle itself and its magazine my opinion you cannot say "gas rifles are inconsistent to a point in which they become unplayable".

From a mathematical point of view, they might have more FPS inconsistency compared to spring and electric counterparts, but measuring performance is not just about reading the chrono..You'll have to scout not only for good brands, but also models made by a good brand, whose design and construction schematics have been more successful.

If the magazine design has enough gas efficiency when releasing it and a good redundancy of gas in relation to how many BBs the mag holds, you will be good for most times of the year. If you need more protection against cold weather, you can make sure the rifle you buy (at least your primary) allows for CO2 magazines (e.g. GHK makes CO2 magazines for the G&P WOC) so you can get those and use those in winter conditions.

The other thing you have to look for is good efficiency in the rifle design, because even if you use good magazines, you might have inconsistent valve hits from a faulty rifle design and this will translate into inconsistent gas volumes getting out of the magazine itself.

Now, when you head towards sniper rifles AND gas, things get even more hairy because the precision factor in a "precision rifle" amplifies what I wrote above.

When looking at your shots through a scope and trying to send them far away at the extreme range of your platform capabilities..and in a predictable manner, you will be pushing the limits of the gun itself.

Most sniper rifles do not come near close to the expectations, in stock form. This is also true for gas sniper rifles. In sniper rifles you have to consider investing a whole lot of time for upgrading and testing. This translates into a lot of money for gas, bbs, parts, and collateral expenses.

If you are thinking to buy a sniper rifle and keep it near stock, you'll probably be disappointed regardless, because it won't behave, role-wise, as a valuable asset in the field. Anyway, if you want to follow that route, I would advise you to NOT buy gas rifles, because in stock form you might be better off with a TM VSR BAR-10 of some sort.

If you are looking to go down the rabbit hole and invest around $1000 total in rifle and parts, I would advise you BUY a gas rifle and upgrade it.

To get into the details, a Tanaka M40A1 is an example of a great platform for a project gun (expensive, too) and a poor performer out of the box. Its stock magazine (10 rounds) is the epitome of consistency fail because it does not load well, it is super exposed to outside temperature changes and holds exactly the amount of gas to expel 10 BBs, with close to NO redundancy. This will translates into shots visibly decreasing in FPS.

I am telling you that if you get the idea of gas rifles by shooting a stock Tanaka sniper or similar gas rifle from other'll think gas rifles are pure garbage.

If you start upgrading the rifle, you'll realize how much it can sit, piece by piece, in its "precision" role. There goes a list of viable examples:
- Getting a 29-round extended magazine looks like having a whole new rifle: the redundancy works great and your shots are now very usable
- Getting a VSR hop and barrel conversion allows you to fit a better hop design (the proven VSR style) and inner barrel (Prometheus/Laylax 6.03 is the winner).

Even with the above two, your rifle is starting to shine with little to no investment, compared to what follows:

- Replace all parts with steel counterparts and reinforce the striker spring, this allows for a more consistent hit on the mag valve and gets rid of faulty shots in case of extreme hot weather..most important though, it makes sure the valve opens, every time..because:

- You want to get an HPA rig. One with dual regulators will allow you, if properly built and with quality material (consider $300 or close to that, just for the rig and build experience) fluctuations of 2-3 FPS.

- Make sure you level your sights and put enough time adding DIY stuff, which every gun needs, depending on the model..e.g. barrel spacers

- You can go even further and add high quality custom hop ups. If you want the extreme level of accuracy possible, you have to leave the commercial hop ups and go for a custom R-Hop installation (not the clones, the HunterSeeker Armories R-hop). It requires time and some tinkering skills (some gun techs can do it for you), but it's worth the final extra step.

The above works for ANY FPS range.

If you want a great semi automatic sniper rifle and you want blowback (I personally would not live without, but I'll make exceptions for bolt action sniper rifles), you might want to check out the KC-02 RATech version. Semi auto, blowback, gas beauty (works with HPA rigs, too).

I might edit this post in case I find typos or stuff that I want added, but hopefully this answer will stay here as a milestone for my personal point of view on the matter. It is such a common question and hardly answered properly in ANY forum, and I know sometimes I wish I had the full version of the explanation instead of hoping for the rifle to shine before pulling the trigger on a $600 purchase.
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Thanks! alot! =)

I want the tanaka badly.. m40. I love it.

The HPA rig is the expensive things?
Can someone show me what a good build with hpa rig ?
What i'm trying to say is what should i buy ?
Reezo said it all....!
Rigs cost is from ~$90-150 for regulator, Palmers is the most expensive but one of the best and the tanks cost goes with the size.
Here's a how to ..

Keep in mind that you'll need a line from the back pack (or where you'll have the tank) to the rifle.
Something like that

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Thanks! alot! =)

I want the tanaka badly.. m40. I love it.

The HPA rig is the expensive things?
Can someone show me what a good build with hpa rig ?
What i'm trying to say is what should i buy ?
Thanks Wolfgeorge :)

Yes the air rig is one of the most expensive upgrades. I had mine built from a gun tech I trust and at the end it costed me around 70% the price of a new Tanaka M40A1..The nice thing is that if you have just gas rifles you can use the rig with all of them..not simultaneously of course.

This is my air rig:

I believe it to be among the high end, class A, rigs for both parts and build quality.

If you want to get the best gas consistency make sure you use HPA with two regulators, primary and secondary.

I am sure there are many high quality rigs here owned by the other members of this forum.
but what do you fill them with ? the same gas as paintball users ?
hmm wondering about how to get it since im in norway, but i guess we have it to. Could you link me to your rig ?

Does anyone know one who sells ?
You can find rigs for sale from time to time. Make sure they either have the magazine you need, tapped already, or the tools and final line that you will put yourself into the tapped magazine.

You can use HPA (paintball users use this, I believe) and CO2 canisters. The latter does not perform as HPA and is more expensive per shot, but allowsore portability if you want to go for small form factor.
So you can use co2? Im working with co2 aquariums so I can get free CO2 from firestations etc
Could anyone link to some good regulators and what I need?

About the containers/tank, is this something importen for fps and stability ? or does it go good with like something like this :

sorry for norwegian link. But only one i could find
These are the CO2 cartridges I am (we are) talking about:

For regulators, I'll let other, more experienced users, give you a hand with names and product codes. As you might have read in the V-PAS topic, I did not choose/build my own I don't want to give you bad intel :)

I don't think a tank can give you more or less consistency although some brands might be better than others. Remember there are different sizes for HPA tanks and while some are appealing for their small size, they might become less convenient in terms of how many shots they will hold. There seems to be a standard tank size that most people use: 48ci

*correct me if I am wrong, anytime guys*

Example of another rig (courtesy of EngelMacher, from which I got this some months ago.. :))

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I think Reezo sums it up pretty well above but I disagree about the the mag performance.
I get around 3-4 fills off bbs per gas charge.I found no increase in performance from the 29rnd long mags and think that they are just as affected by ambient temperature.Ive since sold my 3 long mags and run 5 short mags.

The performance from a well tuned tanaka can match the likes of a tuned vsr, but it takes more work,money and more knowledge.
If your only just starting to use and upgrade rifles I would stick to spring rifles. The likes off tanaka rifles are not hard to upgrade but if you do have a problem can be harder to fix.

There is something special about using the likes of a well tuned tanaka though.
I currently run a tanaka LTR which has become my main rifle, even replacing my vsr which I used week in week out since they were released. Ive also owned and upgraded 99% of the rifles available on the market over the past 12 years and I truly think that the tanaka's are the nicest to use and are a joy to upgrade.
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well, the problem is that i going in marpat uniform. You see where this is going? I want a USMC m40 ... It's non good spring m40 out there as i understand..
a vsr is pretty much an m40,if you want another model it may be worth considering making the stock
@Bitchtits I understand what you mean and by all means I believe we are both putting together our experiences, I had the long mag for a short time before it was tapped so I haven't really had much time with I think my short mag got influenced by a bad brand of red gas that is more powerful than normal green gas but more influenced by temperature.

Bottom line, an external air rig is pretty much mandatory for a precision gas airsoft rifle. Every time you look at your shots through a magnifying scope, each single tiny bit of unpredictability becomes a giant for you to see..and can drive you nuts ;)
It really does.

Basically, to build your reg, you need a palmers stabilizer, a SMC ARX20, and some parts from mcmaster carr. Everything you need is on there for pretty cheap. There is no excuse not to. :p
I do think that a rig is advisable. Im planning on finally getting my hpa set up done within the next month.
For the past few years I've just ran propane and had a spell with a small co2 rig (cold shot) but that was not well designed and broke more often than worked so I got rid of it . Must say that it put me off slightly.
A good rig will not be too expensive and will not let you down. Trust me on that one.

Let me know if you need help, I have built a few rigs in my time... :p
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