ASG Specna Arms SA-J20 FLEX™ High Speed Machine Gun

ASG Specna Arms SA-J20 FLEX™ High Speed Machine Gun


In stock

Specna Arms


Replica of the Specna Arms SA-J20 FLEX™ submachine gun

Made from high-quality polymer and metal, this replica of the PPK-20 submachine gun.

The PPK-20 submachine gun is a representative of the latest generation of AK-series carbines. It features a handguard with m-lok slots and RIS rails, mounted with a mounting pin in the breech chamber. Dorsal RIS rail securely seated in the barrel holder. Closed sighting devices. Two-sided selectorergonomic pistol grip connected to the trigger holster and folding and 9-position adjustable buttstock. The above features, together with its small size, make the PPK-20 an ideal self-defense weapon for tank crews, pilots or VIP protection.

Like its combat counterpart, the replica is characterised by very low weightsmall dimensions, expandability thanks to RIS rails and m-lok slots. Thanks to its dimensions, it is a very good choice for CQB games or as a backup replica for a sniper.

The replica's construction is based mainly on parts made of nylon fibre-reinforced polymer. Only the necessary details such as the selector lever, all pins and the elements of the sighting instruments were made of steel. The replica is almost perfectly fitted, we will not experience any play on the locking chamber cover, selector or stock segments.

The model is powered by a magazine with interchangeable capacity of 80 or 30 rounds and has been equipped with extended feeder eliminating the problem of remaining rounds in the chamber.

Inside the replica is a factory-installed programmable optic SA ETU 1 ™ allowing the fire modes to be set to binary3-shot burst and pre-cocking. In addition, the replica is equipped with ESA2  quick-change spring system and precision barrel 6.02mm with a length of 210mm.

Features of the replica:
-Light weight and compact size
-Made from high-quality nylon fibre-reinforced polymer
- Double-sided manipulators
- RIS/ M-Lok handguard
-The ESA2 quick-change spring system allowing you to change the spring without disassembling the replica
-Programmable optics SA ETU 1 ™
-Variable capacity 80-30bb magazine with extended feeder
-2 variable capacity mid-cap magazines included

Programming instructions SA ETU 1 ™:

ETU1_manual (

Package includes:

  • 2x magazine
  • Instruction
  • Replica

Package excludes:

  • The set does not include the battery nor charger

To buy an airsoft weapon in the UK you must have a valid airsoft defence.

This is not a licence, it is basically just proof that you intend to buy an airsoft weapon for use in airsoft.

An airsoft defence could be a UKARA or membership with the British Airsoft Club, and various other forms of defence.

You can only obtain an airsoft defence once you are over the age of 18.

To get an airsoft defence the law is that you should play at least 3 games of airsoft, and that you must have been playing for at least two months.
You can still buy an airsoft gun without a defence, provided you are 18 or older. If you choose to do this we would, by law, two tone (paint in a bright colour) parts of your chosen weapon. This is because an airsoft gun is considered a RIF aka Realistic Imitation Firearm, because they are so close to the real steel, whereas when you paint parts of it in a bright colour it becomes an IF aka Imitation Firearm. The reason being that the bright colours make it look less realistic to the public, and therefor less likely to be mistaken as real, were it to be used for any other purpose than airsoft.

When you order a gun from us you will need to add your defence details in the comments section of the cart. If you do not have a defence you will need to write the colour that you wish to be used for two toning your airsoft weapon.

Here is what's stated in the VCRA (Violent Crime Reduction) Act:

For airsoft skirmishing, the Association of British Airsoft is putting in place arrangements to allow retailers to check that individual purchasers are members of a genuine skirmishing club or site. The key elements of these arrangements are:
1. new players must play at least 3 (three) times in a period of not less than two months before being offered membership
2. membership cards with a photograph and recognised format will be issued for production to retailers
3. A central database will be set up for retailers to cross-check a purchaser’s details
4. member’s entry on the database will be deleted if unused for 12 months.
The defence for airsoft skirmishing can apply to individual players because their purchase of realistic imitation firearms for this purpose is considered part of the “holding” of a skirmishing event.
Size Chart