Classic Army PX9 Airsoft Gun AEG with Drum Mag


This is the Classic Army PX9 Airsoft Gun AEG with Drum Mag, now in stock at Just BB Guns the UK’s No1 Airsoft Guns shop.



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top rail system
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tactical stock
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mid cap magazine
drum magazine icon
firing mode full auto


This Classic Army PX9 is constructed primarily from high-density polymer, keeping the build light, scratch resistant and highly effective for CQB. This outstanding AEG has a polymer sound-amplifying muzzle device, which gives the PX9 a stifling muzzle sound. The “snap snap snap” of a triple tap from this AEG drowns out its motor noise. The device attaches to the 14mm CCW male threads at the tip of the alloy 5-inch outer barrel, allowing you to change up the look of the PX9 as you wish. Surrounding the outer barrel, there is a hybrid 20mm Picatinny handguard system that provides Picatinny rails in all the places you will need them. The PX9 receiver has similar controls as the M4/AR15, which are ideally placed for fast access. The magazine release can be found on the right side of the AEG, and sits well within reach of the shooter’s trigger finger, allowing for a drop-free reload. The fire selector is found on the left side of the AEG, directly above the pistol grip, and sits comfortably beneath a right-handed shooter’s thumb when in a firing grip. Each fire mode is denoted with markings; SAFE, SEMI and AUTO. The trigger of the PX9 is a flat, speed-style trigger intended for rapid semi-automatic fire. The left side of the receiver also features a dummy bolt release catch, which does nothing on an Airsoft AEG, but has nonetheless been styled up to match the design of the fire selector and magazine release.

This PX9 from Classic Army has an ambidextrous charging handle, which is designed in a similar fashion to popular raptor-style charging handles. The charging handle does not need to be pulled to prime the AEG, but instead retracts the mock bolt carrier to reveal the rotary adjustable HOP-UP system. The HOP-UP can be adjusted from the right side of the AEG whilst the charging handle is held to the rear. The rotary unit is widely known as superior to the legacy gear HOP unit and provides more stable adjustment with less likelihood of the HOP setting being affected by the vibrations from firing. The pistol grip of this PX9 is an ergonomic type with a filled-out backstrap or beaver tail to make the AEG more comfortable to hold. One of the aspects which makes the PX9 so compact is its 2 position PDW type stock, found at the rear of the AEG, right where you expect it to be! This stock is one of the best PDW stock designs for Airsoft, as it provides the compact form factor to allow for easy transportation and storage whilst still providing enough space for standard M4/AR15 buffer tube stick batteries. To access the battery compartment, simply extend the stock and pull the tab with the Allen screw in downwards, which should allow the bottom part of the stock tube to come free – NO TOOLS NEEDED! Inside you will find the mini-tamiya connector for your battery.

The PX9 internals are very good; it has its own programmable electronic trigger unit, which can be set up for either 3 or 5-round bursts, either replacing semi-auto or full auto! This is very useful for Airsoft skirmishes with limited magazine capacity, as it will help you avoid the temptation to spray the enemy whilst saving that ability for when it is absolutely necessary. The ETU also provides motor and battery protection and will prevent the PX9 from being fired when the battery is low and potentially damaging the battery cells. The most notable part of the PX9 is its 6.03mm tight bore inner barrel, which provides excellent accuracy in such a short package, in concert with the rotary adjustable HOP-UP unit. It is rare to find such a feature-packed AEG at this price range that isn’t a bog-standard M4. Also, this PX9 has 9mm bearing bushings that will keep the gearbox running smoothly and a quick-change spring system we all love.


Step 1: Set your fire selector to “SEMI”
Step 2: Depress the trigger for 5 seconds until you hear the ETU beeping
Step 3: Release the Trigger (the ETU will continue to beep – the current settings)
Step 4: Depress the trigger and hold it for 3 seconds
Step 5: Release the trigger once the beeping sequence changes.
Step 6: Once you have your desired setting, turn the selector to the AUTO position.

The following is a list of the settings available for the CA ETU.

Default – SAFE-SEMI-AUTO – Beep, Pause, Beep x8
Setting 1 – SAFE-SEMI-3 ROUND BURST – Beep, Pause, Beep x3
Setting 2 – SAFE-3 ROUND BURST-AUTO – Beep x3, Pause, Beep x8
Setting 3 – SAFE-5 ROUND BURST-AUTO – Beep x5, Pause, Beep x8
Setting 4 – SAFE-SEMI-SEMI – Beep, Pause, Beep




  • Reinforced Polymer Construction
  • Tightbore Inner Barrel
  • Pre-Installed Programmable ETU
  • Compatible with Arp-9 Magazines
  • Hybrid Picatinny Handguard
  • 20mm Picatinny Railed Receiver
  • Sound Amplifying Muzzle Device
  • 14mm CCW Male Threads for Suppressors and Tracers
  • Flip-up Sights Included
  • Programmable Electronic Trigger Unit


  • Classic Army PX9 AEG Airsoft Gun
  • 1400R Auto Winding Drum Magazine
  • 120R Medium Capacity Magazine
  • Speed Loader
  • Cleaning Rod
  • Small Bag of 0.20g CA BBs
PX9 airsoft gun ca info
  • no1
    Removable Flip-Up Rear Sight
  • no2
    Tactical Rail System
  • no3
    Removable Flip Up Front Sight
  • no4
    Adjustable Stock with Battery Unit
  • no5
    Polymer Lower Receiver with Controls
  • no6
    RIS Tactical Rail Handguard System
  • no7
    Flat Speed-Style Trigger Unit
  • no8
    120R 9MM Style Magazine
  • no9
    1400R Battery Drum Magazine
CA PX9 Airsoft Gun b2

Additional information



Power Type




UK MainlandPriority Delivery1-2 Working Days£7.00
Standard Delivery3-5 Working Days£5.00
Saturday Delivery Order Before Thursday £20.00
Free Delivery4-5 Working DaysOrders Over £150
Buy and Collect30 Min After Ordering £0.00
Scottish HighlandsStandard Delivery 4-5 Working Days£15.00
LerwickStandard Delivery4-5 Working Days£16.00
Isle of ManStandard Delivery 4-5 Working Days£13.00
Isle of WightStandard Delivery4-5 Working Days£13.00
Channel Islands Standard Delivery 4-5 Working Days£25.00
JerseyStandard Delivery 4-5 Working Days£13.00
GuernseyStandard Delivery 4-5 Working Days£15.00
Northern IrelandStandard Delivery4-5 Working Days£10.00
Republic of IrelandStandard Delivery 4-5 Working Days£10.00
BelgiumStandard Delivery 6-7 Working Days£15.00
NetherlandsStandard Delivery 6-7 Working Days£15.00
FranceStandard Delivery 6-7 Working Days£20.00
MonacoStandard Delivery 6-7 Working Days£15.00
DenmarkStandard Delivery 6-7 Working Days£15.00
GermanyStandard Delivery 6-7 Working Days£15.00
ItalyStandard Delivery 6-7 Working Days£20.00
SpainStandard Delivery 6-7 Working Days£20.00
PortugalStandard Delivery 6-7 Working Days£20.00
GreeceStandard Delivery 6-7 Working Days£25.00
AustriaStandard Delivery 6-7 Working Days£20.00
Czech RepublicStandard Delivery 6-7 Working Days£20.00
EstoniaStandard Delivery 6-7 Working Days£20.00
FinlandStandard Delivery 6-7 Working Days£20.00
HungaryStandard Delivery 6-7 Working Days£20.00
LatviaStandard Delivery 6-7 Working Days£20.00
LithuaniaStandard Delivery 6-7 Working Days£20.00
NorwayStandard Delivery 6-7 Working Days£25.00
PolandStandard Delivery 6-7 Working Days£15.00
San MarinoStandard Delivery 6-7 Working Days£20.00
SloveniaStandard Delivery 6-7 Working Days£20.00
SlovakiaStandard Delivery 6-7 Working Days£15.00
SwedenStandard Delivery 6-7 Working Days£20.00
SwitzerlandStandard Delivery 6-7 Working Days£20.00
BulgariaStandard Delivery 6-7 Working Days£25.00
CroatiaStandard Delivery 6-7 Working Days£25.00
RomaniaStandard Delivery 6-7 Working Days£25.00
TurkeyStandard Delivery 6-7 Working Days£25.00
LeichtensteinStandard Delivery 6-7 Working Days£25.00
AlbaniaStandard Delivery 6-7 Working Days£25.00
BelarusStandard Delivery 6-7 Working Days£25.00
BosniaStandard Delivery 6-7 Working Days£25.00
MoldovaStandard Delivery 6-7 Working Days£25.00
MontenegroStandard Delivery 6-7 Working Days£25.00
SerbiaStandard Delivery 6-7 Working Days£25.00
USAStandard Delivery 6-7 Working Days£25.00


Live outside of the UK, but still want Airsoft products? Don’t worry, we’ve got you covered. Unlike most international shipping we have you covered. When you place products into the Just BB Guns cart and select a country other than the UK (United Kingdom), we will calculate the shipping cost at that time. For more information about EU and international shipping, please contact us via our support team.


You can easily calculate your shipping costs via the table above on this page.


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If you enter a billing or shipping address outside of the UK our system will automatically remove the UK VAT. Please note, when you receive your order the local courier company will request local TAX and any import duty owed to be paid by you before they let you have the goods.


Please note that we will follow all the laws relative to your country, and if we cannot send out an item (such as an Airsoft Gun) we will contact you via email for more information and hold the items until we are contacted.

1 review for Classic Army PX9 Airsoft Gun AEG with Drum Mag

  1. 5 out of 5

    Joshua Haines

    Great gun, nice weight to it! Magazine tends to stick a little but though.

Add a review


Does this electric airsoft gun come with a battery and charger?

No, most electric airsoft guns or AEGs do NOT include a battery or a charger unless specified in the description or there is an option to add a battery. If this is not stated anywhere, you will need to add a battery and a charger to your order.

What type of battery does this airsoft gun take?

There are two types of batteries for airsoft guns: NiMH and LI-PO. Modern airsoft guns will typically take LI-PO as this is the better choice for performance. However, NiMH is safer and is an excellent low-cost alternative. See our Battery Disclaimer link in the footer of our website.

What BBs will work best in this airsoft gun?

BB pellets are, simply put, the ammo your airsoft rifle will use. Choosing the right BBs can be just as important as selecting the right gun. This is because BB weight matters - this is simply how heavy the BB is. 0.20g is the most common weight of BBs and a good starting option.

Do I have to buy a blue airsoft gun?

If you are asking this question, the answer is yes: you must buy a blue gun. If you are a newcomer to airsoft and have not attended an airsoft club or site, you will not currently be registered with UKARA. If you are over 18, you can purchase an Airsoft Two-Tone gun. These are blue, or otherwise brightly coloured, guns that are UK legal and comply with the VCR Act of 2007.

How can I buy a black airsoft gun?

You must supply a defence at checkout to buy a RIF (Real Imitation Firearm) - a Black / Tan / Gold / Silver with no blue bits. Make sure one of the following is true: the delivery address is not in the UK, you have a current UKARA membership, you have a current UKAPA membership, you are a member of a properly insured historical re-enactment group or society, you are a film, television or theatre production company, you are (or are acting on behalf of) a museum, you are a Crown Servant in pursuance of your Crown duties.

What is FPS?

FPS means ‘feet per second’ - a measure of velocity or distance travelled in a given second. So, in theory, the higher the FPS, the further the BB pellet will travel. However, you will also need to consider BB pellet weight and, importantly, if you are using a Hop-Up unit.

What is a Hop-Up?

A Hop-Up makes it so that when a BB is fired from the airsoft gun, a small and grippy rubber pad rubs against the top of the BB. This has the effect of adding a backspin to the round projectile. Adding a backspin to any ball whilst flying through the air adds lift and increases its range. Most high-end electric (AEG) airsoft guns have an adjustable hop-up so that you can set the gun for your optimal shooting distance.

How Long Should I Charge My Battery?

Standard Airsoft Batteries take an initial charge of about 4 hours but no longer. Subsequent charges should last no longer than 2-3 hours. Remember: never overcharge your battery! If in doubt, purchase a good quality charger with a cut-off feature, so no matter how long you charge, it will not damage your battery or have a fire risk. Always use a Safe Battery Charger Bag when charging a LI-PO battery, and never leave it unattended!

What is the difference between standard airsoft batteries and Lipo?

NiMH batteries are like your standard rechargeable AA batteries: common, very safe, resistant to cold weather, and capable of holding a charge well. These can last for one to two years even when charged often.

Lipo batteries hold way more charge and last longer than NiMH batteries; LI-PO batteries are the most advanced battery on the market. This current generation of batteries is used practically everywhere, including your mobile phone or tablet. They come in two voltages, 7.2v or 11.2v, perfect for an upgraded AEG with a high fire rate.

If overcharged, they can explode and cause chemical burns, fires, or even death in some cases. So only charge with a LI-PO compatible charger with a full charge cut off, and never charge unattended.

Unlike the NiMH battery type, there are no methods for an optimal and healthy life with LiPo batteries. Just make sure never to let it fully discharge. So, as soon as your AEG starts to slow down and the gears turn slower with each shot, get it on charge.

What warranty is supplied with this airsoft gun?

All of our airsoft guns and accessories have a manufacturer's warranty, and we offer a full refund or replacement for any issues a gun may have due to the manufacturing process. This gun is not, however, covered for damage caused by dropping or misuse. The warranty is also not valid if the product has been altered or tampered with in any way, including being taken apart for any reason. Please see our Terms and Conditions on our website for full warranty information.

What should I do if I have an issue with this airsoft gun?

The first thing to do is to take a look at the manual supplied with the gun. Then, take a look at our blog. We offer many valuable tips and tricks to get the best from your rifle. Finally, if you still have problems, please contact our support team directly at sup[email protected] or join our live chat on our website.