Specna Arms
Product code:
  • Quick Change Spring
  • Fully Licensed Replica

A highly realistic replica of the instantly recognisable M4A4 platform, which features Zinc Aluminium externals, excellent internal parts, a quick change spring, GATE MOSFET and fully licensed, engraved trademarks.

Full description


The Specna Arms SA-E03 Edge is another fantastic replica in what is quickly becoming our favourite line of AEGs to ever hit the market. Specna pride themselves on their external build quality, packaging excellent internal parts as a minimum and bringing their products to market at a sensible and realistic price point vs. others. The external build is a gorgeous blend of Zinc, Aluminium, Steel and other Alloys to create one of the most realistic and robust replicas about. The metal work has been Nano Coated to prevent scratching and will protect it's finish longer and better than standard untreated AEGs. The Polymers wherever used (pistol grip, stock and rail covers) are high density Polymers which feel much better than your standard tacky plastic you would see elsewhere.

The front of the rifle features a 14mm CCW thread which will allow you to attach suppressors / tracer units once the birdcage flash hider is removed; perfect for those who are trying to achieve a 'Special Forces' look, or would like to extend the inner barrel and need a way of covering the excess barrel. The handguard is the traditional four-point M4A4 20mm setup which is highly identifiable as the "OG M4", and features plenty of rail space for your accessories. The upper receiver has a 20mm rail which is ready for optics and sights, but comes with a rear flip-up ironsight to be used in-conjunction with the built-in front sight. There are two QD sling sockets on the stock for the quick installation of sling loops to facilitate any kind of sling setup. At the rear of the replica is an ambidextrous sling plate which allows for the connection of a sling from either side of the weapon; a very useful component for left handed players who would normally not be catered for. The six-position collapsible Crane Stock is where the battery is housed, and has a Mini-Tamiya connector ready to accept 9.6v NiMHs or a 7.4v LiPo. We personally recommend a 7.4v 2000mAh Crane Stock LiPo. To access the battery compartment, simply squeeze the two tabs holding the rubberised butt pad in place, which will remove and reveal the battery space behind.

Internally, the SA-E03 Edge contains some potent parts which are a cut above what you would get inside a standard AEG. Inside the gearbox you will find a reinforced Polymer piston with a Steel rack, which reduces wear on the piston and massively increases the shooting you can before a service is needed. An O-Ring sealed nozzle, double O-Ring sealed Cylinder Head and Piston Head which creates a tight air-seal, which again will lengthen how long you rifle holds its' Factory FPS. To round it all off the rifle features a set of Steel Gears and 8mm bearings which ensure smooth operation, and longer life due to the higher quality materials used. Rounding off the package you have a Rotary HOP unit which is a design that allows for much more precise and effective HOP adjustments, to increase range, and also a precision  6.03mm inner barrel which keeps BB trajectory more stable for longer. The GATE X-ASR MOSFET inside will protect your electrical components, improve lifespan of the trigger and also offers some basic fault diagnosis with the onboard LEDs. The ESA™ quick change spring system makes changing the main spring a couple of seconds once the gearbox is removed, and makes this rifle ideal for those who like to tinker, or for those who like to switch between roles and need different output velocities from their rifle.

If you're looking for a replica which is as instantly recognisable as it is well-built, with a wealth of uprated internal parts and awesome quality of life features like a quick change spring and MOSFET, then the SA-E03 is for you.


  • Fully licensed replica
  • Rock River Arms trademarks
  • Unique serial number
  • 14mm CCW thread
  • Nano Coated finish
  • Hologram authenticated
  • Quick access pistol grip
  • Four point 20mm RIS handguard
  • Full length 20mm top rail
  • ESA™ Quick Change Spring System
  • Rotary HOP unit
  • 6.03mm inner barrel
  • QD sling sockets on stock
  • Ambidextrous sling plate
  • ORION gearbox
  • Ready for up to 140m/s springs
  • Reinforced gearbox
  • Aluminium sealed Nozzle
  • Aluminium double-sealed Cylinder Head
  • Aluminium double sealed Piston Head
  • Steel Gears
  • 8mm Bearings
  • 2 x 125rnd Mid-Caps included
  • Rock solid construction
  • Highly realistic replica
  • Engraved receiver
  • Flip-up ironsights

Package Includes:

  • Rock River Arms SA-E03 Edge Carbine
  • 2 x 125rnd Mid Cap Magazines
  • User Manual
  • ID Lanyard
  • Sticker Set
  • Certificate



Weapon Construction External
Weapon Type
Assault Rifle
Over 18 Only Icon
Over 18
Icon UKARA - United Kingdom Airsoft Retailer Association
Defence / UKARA Required
Yes, No,
FPS Icon
FPS (Feet Per Second), using 0.20g BB
Approx. 320fps ± 10%, using 0.20g BB
Site Legal Icon
Site Legal, using 0.20g BB
Included Items
  • Instruction Manual
  • Magazine x 2
  • ID Lanyard
Skill Level Icon
User Skill Level
Regular Player

Weight and Dimension

Weight KG Icon
Weight (KG)
Approx. 2.7kg
Weapon Length Collapsed
Length (Collapsed)
Weapon Length Extended
Length (Extended)


Colour Wheel Greyscale
Primary Colour
Black, Tan ,
Colour Wheel Greyscale
Secondary Colour
Two Tone Icon
Pre Two-Toned
Construction Icon
Zinc Aluminium, Steel, Polymer, Alloy
Weapon Construction External
External Construction
Gearbox Icon
Internal Construction

Weapon Specific

Power Source Icon
Powered By
Blowback Icon
Weapon Platform
M4 / AR15 / M16
Magazine Style Icon
Magazine Style
Fire Select Icon
Fire Selector
PatrolBase | Fire Select Safe
Patrol Base | Fire Select - Semi Automatic
Semi Automatic
Patrol Base | Full Automatic
Full Automatic
Weapon Safety Features Icon
Safety Features
Trigger Lock
Shooter Configuration Icon
Shooter Configuration
Right Handed
Weapon Configuration Icon
Weapon Configuration
Weapon Scale Icon
Weapon Scale
Suggested BB Weight


Hop-Up Unit Icon
Hop-Up Unit
Hop-Up Unit Adjuster Icon
Hop-Up Adjuster
Hop-Up Unit Location Icon
Hop-Up Location
Behind mock bolt plate when charging handle to the rear


Weapon Furniture Icon
  • Railed Handguard
  • Railed Receiver
  • Sliding Stock
  • Threaded Outer Barrel
  • Ambidextrous Sling Plate
Rail System Icon
Rail System
20mm RIS / RAS
Icon Stock Positions
Stock Setting
Weapon Length Extended
Stock Positions
6 Position
Sight Type Icon
Sight Type
Iron Sights
Sling Plate Icon
Sling Options
Buffer Plate , Stock , Barrel,


Icon Thread Type
Outer Barrel Thread Type
Icon Thread Direction
Outer Barrel Thread Direction
CCW (Counter Clockwise)
Outer Barrel Thread Size
Inner Barrel Diameter

Magazine Specific

Magazine Type
Medium Capacity , AEG,
Magazine BB Capacity
Approx. 125 Rounds
Magazine BB Fill Method
Speed Loader
Magazine BB Fill Location

Electric Gun Specific Information

Gearbox Icon
Gearbox Version
V2 Gearbox
Wiring Icon
Gearbox Wiring
Rear Wired
Spring Change Icon
Gearbox Quick Change Spring
Battery Specific
Battery Connector
Patrol Base | Icon | Mini Tamiya
Mini Tamiya
Suggested Battery
Suggested Battery Type
Suggested Battery Configuration
Suggested Battery Voltage

Product Testing Data

Notepad Icon
Test Description
Notepad Icon
Tested Using
ASG Blaster 0.20g BBs
Notepad Icon
Test Date

Delivery & returns

Postage Estimates

Below are some rough postage prices for orders. Please note these are subject to change, and are only a rough guide. For more accurate postage estimate please use the Postage Calculator at the basket.

UK Standard



UK Next Day



Highlands / Islands






* Please note that Scottish Highlands, Islands and EU post prices can vary wildly. Prices range from £8.99, up to £29.99, so please ensure you refer to the Postage Calculator at the basket for the lowest possible price.


For more detailed information please see our Delivery Information.

We are proud of our rapid delivery which, comprises of Royal Mail 1nd class recorded and courrier next working day to mainland UK. We also ship to EU countries; Scottish Highlands and Islands which are a minimum of a two day service and are shipped by land / sea. Our deliveries are made by DPD and Royal Mail recorded 1st or 2nd class signed for, and Royal Mail Standard.

We deliver from Monday to Friday, and Saturday with a special service. If more than 7 days have passed since we confirmed dispatch and your order has not arrived, then please call our Customer Care team on 01484 644709. If we don’t have stock of an item then we will call and email you letting you know that it is out of stock, and we will send it to you as soon as stock becomes available. If you want to cancel any item/s that are out of stock once order you can. For most UK deliveries postage & packing is based upon the value, size and weight of your order.

We always look to fulfil every order in full on time, but on the odd occasion an  item is missing we will attempt to contact you prior to shipping. If your order is a Next Day service, and we cannot contact you, we will refund the missing item(s), and ship the rest of the order immediately.

Upon signing for the delivery you are accepting the correct delivery for your items, however, we do understand that you might not be able to open your package straight away so you have up to 48 Hours to advise us of missing / incorrect items.

Please note we do not compensate in any way for time spent waiting in for deliveries that do not arrive, we do however accept that in life, mistakes and circumstances happen that can unfortunately mean that your item may not be delivered next day as requested e.g. bad weather, computer error etc. If such mistakes do occur we will refund your postage charge in full and by agreeing to the previous sentence and proceeding with the order you accept that we have done everything we can to help you obtain the package.

For orders outside of the UK Mainland please specify your location when calculating postage. 

For all international orders there may be an additional postage charge on top of that quoted. You will be contacted if this applies for your order. If the postage costs are too high, you may cancel your order at any time prior to dispatch.

Courier Specific Information


You will receive tracking information when your order has been processed for shipping.

Please note that UPS will make one delivery attempt to deliver your parcel.

If no one is available to receive the package at the address, then at the drivers discretion, the parcel will either be re-scheduled for the next working day or sent to a UPS Access Point.

If the parcel is too large to be left at a UPS Access Point (eg a package containing a large plate carrier or replica) then it will be returned to the sender, in this case us, Patrol Base Ltd.

It is the customers responsibility to check tracking, and if a parcel is taken to an access point it will need to be collected within 10 days.

Further delivery attempts may incur additional delivery costs.


You will receive tracking information when your order has been processed for shipping.

Please note that DPD will make up to two delivery attempt to deliver your parcel.

After the first attempt the parcel will be taken back to their depot and attempted the next day, if after this the parcel is not delivered it will be returned to the sender, in this case us, Patrol Base Ltd.

Further delivery attempts may incur additional delivery costs.


For more detailed information please see our Returns Policy Page.

You can cancel any order that has not been dispatched. Please call our Customer Care team on 01484 644709 between 9:30am and 5:00pm or log onto the website and check the status of your order in your account.

If you do want to arrange the return of an item, simply call our friendly Customer Care team on 01484 644709 from 9:30am to 5:00pm and they will explain how to return the items.

Alternatively you can get in touch with us via our Contact Us Page.

If you are returning a product because it is faulty or something is wrong then we will pay for it to be returned to us. The Customer Care Team will arrange for cost you incur to be refunded.

You can return any item for any reason whatsoever, even if you have just changed your mind, within 14 days of receipt of the order. This is in addition to your rights under the Consumer Protection (Distance Selling) Regulations 2000.

We want you to be absolutely happy with our products and services, so we provide the simple Patrol Base guarantee:  if on receiving your item you are unhappy with your item for any reason then simply send it back to us. We will replace or refund the item.

This guarantee ensures that if you are unsure about what you are purchasing you have the peace of mind of knowing that we are here to help. In addition, if you decide that you made a mistake or you change your mind then please send the goods back within 14 days of receipt. Sadly, this can only apply to standard range products; we cannot accept back any item that has been made to order i.e. Two Tone Airsoft equipment.

Upon signing for the delivery you are accepting the correct delivery for your items, however, we do understand that you might not be able to open your package straight away so you have up to 48 Hours to advise us of missing / incorrect items.
If you do decide to return anything for whatever reason then please get in touch with us via our Contact Us Page for a copy of our returns form.

If you do send goods back for any reason other than a fault you will normally be asked to pay the carriage charges, we would just have to recover the costs in our prices. We would rather be completely straight with you, keep our prices as low as possible, and just ask you to pay if you choose to return anything.

Any none faulty return must be shipped back in full re-saleable order with original undamaged packaging.

Finance options

Looking to buy an Airsoft replica, but don't want to drop all your money at once? Perhaps you want to spread your payments over time to keep a backup of money, or perhaps you simply can't afford the hit right now and want to spread it over time? In any case you can spread your payments to take away the pain of the initial hit of the purchase of a replica, or give yourself the ability to spend that little bit more and get that rifle you've always wanted!

Want to know more about Airsoft Interest Free Finance?
You can check out our Airsoft Finance Info Page for more details >

Here at Patrol Base we have partnered with Omni Capital Retail Finance, allowing you to buy now pay later with ease.

You can select finance during the payment process which will take you to the Omnicapital portal and allow you to complete a credit check at your leisure. Once your finance is accepted you will be able to complete your order and wait for the goods to arrive!

Wondering how much it's going to cost?
Check out the examples below.

Looking to make the jump from BB guns to Airsoft, but don't want to save up to buy your entire loadout? Your time has come!

Airsoft replicas are leaps and bounds ahead of BB guns, but can sometimes carry a heavy price tag. You can spread the cost with us to save the strain on your wallet to allow you to buy your entire loadout at once, rather than piece by piece. Play now, pay later.

Want to know exactly why Airsoft Replica are so much better than BB Guns? Check out our BB Guns Page.

You might also like