Specna Arms Sten MK.II RETRO AEG submachine gun (X-ASR)
The Specna Arms: Retro range was developed in collaboration with S&T/AGM. It is a series of classic historical replicas, designed for enthusiasts of iconic designs from past decades. Models in this range faithfully reproduce the appearance of the original weapons, making them ideal for historical re-enactments and an excellent choice for enthusiasts of historical firearm replicas.
The MOSFET X-ASR ensures the safety of the replica’s components, improves trigger response and extends the service life of the electronics and battery, whilst also allowing basic faults within the replica to be diagnosed thanks to built-in indicator LEDs.
The British STEN submachine gun in its most popular variant, the MK.II.
Simple, cheap and quick to manufacture, it helped to supplement the equipment of the British Army, which had entered the war without a submachine gun of its own design.
Chambered for the 9×19 mm Parabellum cartridge, it had an effective range of approximately 150 metres. Over 4 million units were produced, including those manufactured clandestinely in territories occupied by the Third Reich.
The airsoft model from Specna Arms has been constructed mainly from steel, which enhances its durability whilst capturing the historical character of the original. The model can be quickly dismantled by unscrewing the bolt connecting the stock to the receiver with a flat-bladed spanner.
Inside the stock, there is space for a battery (see notes).
The Sten MK.II from Specna Arms is an AEG replica of the legendary submachine gun, whose design faithfully recreates the weapon used between 1941 and 1945, when the Sten was widely deployed on the fronts of the Second World War.
It is suitable for use in re-enactments, demonstrations or during standard gameplay set in a Second World War setting.
Inside the replica, you will find, among other things:
- A sealed aluminum nozzle
- A steel cylinder
- A piston with steel teeth
- Steel bushings
- Steel gears
Package include:
- Cleaning rod
- GATE X-ASR Diagnostics Card
- Mid-Cap Magazine
- Replica
- BBs speedloader
Package exclude:
- The set does not include the battery nor charger
The replica has limited space for the battery.
During testing of the replica, a battery with the following dimensions was used:
125.2x20.4x10.4 mm
The space inside the stock is 265 mm long and 21.4 mm in diameter
Battery included![]() NiCd
rechargeable battery is characterized by high efficiency
current-carrying capacity, but there are disruptive effect on memory.
Should be unloaded and loaded in the full cycle, ie, it is recommended
to fully discharge, and after unloading must charge the battery
immediately without leaving it for a long time in a discharged state. | No |
Blow Back![]() Blow back is a simulation system of the cocking lever - it imitates the work of it as the equivalent sharp. This system raises the realism and adds a lot more experience during shooting. | No |
| Colour | Grey |
| Product length [cm] | 76.50 |
| Product weight [g] | 2565 |
| Power supply | Electric |
| Made of | Steel |
| Material | Plastic |
Muzzle velocity [FPS]![]() It is the spped of bb, while its leaving the innerbarrel of replica. This speed is measured in FPS (Feet Per Second). 1 FPS = 0,3 m/s 1 J = 99 m/s 1 J = 326,7 FPS | 370 |
| Fire mode | Full-auto |




