King Arms M4 TWS KeyMod Dinosaur - Black



King Arms


King Arms M4 TWS KeyMod Dinosaur – Black

The King Arms Dinosaur is one serious Airsoft gun. From its full metal build to its performance on the field, it is an outstanding piece of kit.

The Dinosaur is full metal construction, which makes it very solid, and will happily take on the bumps and bruises of airsoft. There are 8 QD sling attachment points on the gun, so you have excellent options for setting up your sling.

The long handguard is covered on three sides by KeyMod slots, giving you a superb amount of customizability and attachment options. The Dinosaur comes with three pieces of rail ready for you to attach wherever suits you best on the handguard. There is also a rail all the way along the top of the rifle for attaching sights, torches, lasers or any other gun attachment you wish to add.

The stock is adjustable for different lengths and has two velcro pads for attaching those awesome patches to. The stock butt pad is non-slip and hinges open to allow access to the battery compartment. The Dinosaur has folding front and rear sight that are adjustable.

When you pull back the charging handle the dust cover will flip open, the fake bolt will retreat rearwards and lock in position so you can access the adjustable hop unit. To release the fake bolt you press the bolt release catch located on the left side.

A particularly good feature on the King Arms Dinosaur is that both the fire selector and magazine catch are ambidextrous, which is terrific for both left-handed airsofters and for when you have to use an alternate hand during gameplay.

The barrel's length means that the gun has good accuracy at range. The grip can be adjusted for different hand sizes, so you can get the most optimum grip on the gun.

The Dinosaur also boasts a quick change spring system and MOSFET trigger system for better trigger response.

The King Arms M4 TWS KeyMod Dinosaur is a fantastic weapon and is ideal for the experienced airsofter who is looking for their next weapon.



  • Full metal construction
  • KeyMod handguard with 3 pieces of rail
  • 370 round high capacity magazine included
  • Ambidextrous fire selector
  • Ambidextrous magazine release
  • QD sling attachment points
  • Adjustable stock with non-slip pad
  • Velcro pads and large opening battery compartment
  • Folding front and rear sights
  • Adjustable hop unit
  • 6.02 brass inner barrel
  • Mosfet trigger system
  • Size adjustable grip
  • Quick change spring
  • Bolt catch system
  • Runs off 9.6v NiMH or 7.4v LiPo
  • Firing modes: safe/single/full-auto
  • FPS: 330
  • Length: 870mm (stock collapsed) / 950mm (stock extended)
  • Inner barrel length: 475mm
  • Weight: 2.9kg


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