Everything that you see on our website is in Stock, in High Wycombe and Available for Immediate Dispatch or in Store Collection

GSG-9 AEG Airsoft SMG (205804)

Want to buy a realistic-looking black airsoft gun (RIF) from onlyBBguns? Because these guns look so real, UK law (the VCRA Act) requires you to have a valid reason, called a "defence," to own one. Essentially, you need to prove you're buying it for airsoft skirmishing (the sport itself), not for any other purpose.

Here's how you can demonstrate your defence to onlyBBguns and buy a black airsoft gun:

  1. Show proof of skirmishing: Gather evidence like photos and videos from airsoft games you've participated in. These should clearly show you actively involved in skirmishing, demonstrating your intent to use the gun for the sport.
  2. Become a registered skirmisher: The easiest way to prove your defence is by joining a recognized airsoft association and getting a membership card. The most common one in the UK is UKARA. This registration confirms you're a legitimate airsoft player.

Don't have either of those? No problem! You can still buy the airsoft gun. onlyBBguns can paint it in a two-tone colour scheme. This means part of the gun will be sprayed a bright, non-realistic colour. This makes the gun a "non-realistic imitation firearm" and avoids the restrictions of the VCRA Act. Anyone over 18 can legally buy a two-tone airsoft gun.

£199.99
SKU
213915
In Stock
Free Delivery & Returns*
SHIPPING OPTIONS
DELIVER TO United Kingdom
TYPE HOW MUCH?
Standard £0.00
Expedited £4.99
DELIVER TO Other countries
TYPE HOW MUCH?
International £14.99

Key Features

  • Iconic Military Replica: Faithfully replicates the look of the classic H&K MP5 submachine gun, famously used by the GSG 9.

  • Modernized SMG Platform

  • Retractable Stock: Features a sliding, multi-position stock with a comfortable butt-pad, optimizing the rifle for tight spaces and customizable stability.

  • Equipped with a ventilated, extended M-LOK style handguard for mounting modern lights, lasers, and grips.

  • Includes a full-length 20mm Picatinny rail fixed to the top of the receiver, ready for optics (red dots or scopes).

  • Utilizes a standard, full-size Version 2 (V2) Gearbox for reliable semi/full-automatic performance and widespread upgrade compatibility.

  • Short barrel and collapsible stock make it highly effective for fast-paced CQB (Close Quarters Battle).

  • Comes with a stick-style high-capacity magazine, characteristic of the 9mm SMG platform.


GSG-9 Compact AEG Airsoft Rifle (Modernized MP5)

The GSG-9 Compact AEG Airsoft Rifle is a highly functional electric replica that updates the legendary German submachine gun platform for 21st-century airsoft. This rifle is engineered for the serious player who requires a highly maneuverable, reliable, and unique primary weapon for dynamic CQB scenarios.

Modern Tactical Aesthetics and Construction

This rifle blends the classic look of the iconic submachine gun receiver with modern tactical interfaces. The construction is designed to be lightweight yet durable, featuring a robust Polymer or Nylon Fiber Receiver for easy handling, paired with a solid Full Metal Gearbox assembly.

The front end is aggressively modernized with a ventilated, extended M-LOK style handguard. This interface allows users to mount modern tactical accessories directly to the rail slots, bypassing the need for bulky adapters, ensuring a clean and lightweight setup. T

he muzzle features a compensator/flash hider (14mm CCW threaded)- compatibility with aftermarket muzzle devices.

Retractable Stock for CQB Agility

The rifle is equipped with a sliding, multi-position stock that closely mimics the modern retractable PDW-style stocks. This stock is crucial for CQB, allowing the user to shorten the rifle for room clearing and tight corridors, or extend it for stable aiming in open areas.

The wide, comfortable butt-pad provides a stable shoulder anchor.

Fixed Iron Sights 

The rifle maintains the classic fixed iron sights design found on the original submachine gun platform. This includes a front sight post and a fixed aperture rear sight

Immediate Optics Readiness

Unlike traditional variants that require clamping mounts, this replica features a continuous, factory-installed 20mm Picatinny rail across the top of the receiver.

This rail provides ample, stable space for securely mounting modern red dot sights or scopes, giving the user a significant advantage in target acquisition speed.

Reliable V2 Gearbox Performance

Inside, the GSG-9 Compact AEG houses a standard Version 2 (V2) Gearbox. This ensures the rifle is inherently reliable and highly upgradeable, benefiting from the airsoft industry's largest ecosystem of parts and components.

The rifle operates in both Semi-Automatic and Full-Automatic firing modes, delivering consistent FPS suitable for most skirmishing environments.

Compact Role and Milsim Value

With its ultra-compact size and modern features, the GSG-9 Compact AEG is an outstanding primary weapon choice for players engaged in CQB, Milsim, or those seeking an authentic-looking rifle that has been updated for competitive tactical play.

More Information
SKU 213915
Weapon Category SMG
Powered By AEG
FPS 301 - 350
Construction Full metal
Hop Up Adjustable
Fire Mode Safe/Single/Auto
Battery Included No
Charger Included No
Write Your Own Review
Only registered users can write reviews. Please Sign in or create an account
Delivery

Our courier partners deliver from Monday to Friday, excluding Bank Holidays. We will attempt to dispatch all packages within 24 hours, although at peak times this may take slightly longer. Orders with products with two-tone service or Defence Check may take longer to dispatch.

Once the order is dispatched you will get an email with the tracking number and which courier partner it’s going to be delivered via. Any missing/incorrect items need to be reported with 48hrs of signed delivery.

Returns

Click Here to Download the Returns Form (PDF Format)


Faulty Product?! Unfortunately that is part of life but be rest assured we are here to help! Contact one of our friendly staff via phone or email. Stating what the problem is, if we can resolve the problem via phone or email great if not then they will advise how to send it back and what details we require.

Two tone
We can two tone any weapon we sell at Bespoke Airsoft. The purpose for two toning is if you do not hold a valid defense under the Violent Crimes Reduction Act (VCRA, 2006) which is to prevent the misuse of Replica Weapons, which applies in England, Scotland, Wales and Northern Ireland.

The gun will be sprayed 51% in a bright/primary color (we do only blue, green and red currently). The process of two toning currently runs at 2 working days depending on Drying Time, which is effected by Ambient Temperature and Weather. and currently no express delivery is available for this even if you select it at checkout.
We found other products you might like!

FAQs

1.     What is a BB gun used for?  BB guns are mostly used for practice shooting and training. The stronger ones (i.e. Air Rifles) can also control pests or hunt small animals.

2.     Do you need a Licence in the UK for a BB gun? No, you don't need a licence for a BB gun in the UK, but there are rules. The BB Gun needs to be in two colours; one has to be a primary. All our guns are on the website as per default.

3.     Is a BB gun a good weapon?   BB guns, despite sometimes being seen as toys, can be dangerous. They fire pellets at high speeds and can cause serious harm, or even be deadly in some situations.

4.     Can you shoot BB guns in public in the UK without a Firearm license? BB guns in the UK navigate a legal grey area. While certain models, notably low-power 'soft air' types, typically evade classification as section 1 firearms, more potent versions may require a valid firearms certificate to avoid legal repercussions.

5.     Can you shoot a BB gun in your garden? You can use a BB gun in your garden under UK law, but you have to ensure the pellets don't go into your neighbour's yard, plot or land. If they do and you don't have permission, it's against the law.

6.     Which UK law am I breaking if the pellets go into my neighbour's law without permission?  If your BB gun pellets go into your neighbour's yard without permission, you're breaking UK laws. Specifically, the 1968 Firearms Act and possibly the 2003 Anti-Social Behaviour Act, because you may be causing your neighbours trouble or worry.

Discover Our Top Selling BB Gun Guides

Five Best BB Guns Under £30


Discover our five top selling BB guns under £30 guide here.

Five Top Selling Gel Blasters


Discover our top selling Gel Blasters guide here.

Gas guns


Discover our Gas guns guide here.

Toy BB guns


Discover our Toy BB guns guide here.

Five Top Selling BB Guns


Discover our five top selling BB guns of 2026 guide here.

Five Top Selling BB Gun Assault Rifles


Discover our top selling BB gun assault rifles guide here.

Six Top Selling BB Gun Machine Guns


Discover our six top selling full auto BB guns (best BB machine guns to buy) guide here.

Top 6 airsoft pistols


Discover our Top 6 airsoft pistols guide here.