Specna Arms SA-F21 FLEX™ ETU™ Airsoft Rifle - Black

Specna Arms SA-F21 FLEX™ ETU™ Airsoft Rifle - Black


In stock

Specna Arms


Specna Arms SA-F21

Specna Arms presents its line of replicas - FLEX™. The attractive price combined with innovative spring replacement system and high-quality materials makes this series particularly attractive  for beginner airsoft players.   

The replica has been very well-fitted the user will not experience any play between the lower and upper parts of the body. The use of a body and front made of reinforced nylon allowed for a reduction in weight, making it perfect as a replica for dynamic CQB games. What is more, the nylon fibre reinforcement makes the construction more durable than other polymer constructions. 

The replica uses the quick spring replacement system. This allows for quick and efficient adjustment of the replica's power to the conditions expected on the battlefield without the need to have access to a workshop or a number of specialised tools.
The replica has a factory-built SA ETU 2 circuit, which translates into the ability to set the following:
-Series firing mode - from 1 to 5 shots in auto mode
-Binary trigger
-Trigger sensitivity (3 levels of settings)

Additionally, the SA ETU 2 circuit protects the motor from current overloads and has the ability to alarm on too high or low battery voltage.
The circuit has a built-in activity control mode; after an hour of inactivity, the circuit will shut down and restarting will require reconnecting the battery to the replica.

Manufacturer's recommendation: use with Li-Po/Li-Ion batteries only

Specna Arms F21
caters to new players looking for a reliable replica at an affordable price.

The F21 features, first and foremost:
-a 229mm long, 6.03mm diameter internal barrel.
-small weight of just over 2 kg
-enlarged magazine release
-adjustable length breech
-oblique fire mode switch
-2 Mid-Cap magazines
-Style and practical 7-inch M-Lok handguard
-Replica sound suppressor (14 mm CCW thread)

Internally, the replica features a Gearbox version V2, with a built-in quick-change spring system. Adjustment of the Hop-Up system is carried out by means of a rotary unit. Inside you will also find steel gears and 8 mm diameter bearings.

Package includes:

  • Cleaning rod
  • Instruction
  • Replica
  • 2 x mid-cap magazine
  • Spare parts Deans Connectors
  • Allen key
  • Assembly key
  • Iron sights
  • Small Tamiya - Deans adapter
  • Suppressor

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.
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