- High-density polymer build
- Pre two-tone Blue & Pink options
- Licensed by Colt & Daniel Defense
Whether you're fresh to Airsoft or a veteran looking for a lightweight, "easy mode" primary, the King Arms Colt® x Daniel Defense® MK18 Sportline AEG is a fine choice. Made almost entirely from rock-solid high-density polymer, this MK18 AEG boasts proven internals with wide compatibility and an incredibly light, agile build, tipping the scales at a mere 1.7KG, ideal for those with less physical strength or those who like to fight easy!
On the outside, this budget-friendly build boasts licensed trademarks across the design, from both Daniel Defence® and Colt®, thanks to official licensing from EMG. These markings perfectly match US military-issued MK18 MOD.1 rifles, with a Colt-marked lower receiver and a DD-marked rail system. Airsofters love licensed trades, but they're usually only found on AEGs at twice this price!
Inside, this AEG is based around the proven Version 2 gearbox design, with an alloy shell, 18:1 ratio steel gears and a quick-change spring guide for easy maintenance. An in-line MOSFET cranks up trigger response for rapid double taps, and a tightbore inner barrel enhances accuracy with high-quality BBs. If you're new to the game, seeking the iconic MK18 in beginner-friendly flavour, you've found it with the King Arms Colt® x Daniel Defense® MK18 Sportline AEG!
Fast Delivery
Delivery & Postage
Here at Patrol Base, we send all our packages from our Warehouse based in the UK with the exception of European Warehouse Items. All of our parcels are sent with specially picked couriers to ensure your parcels get to you on time and in one piece.
For more information please check out our Delivery Information Page.
Estimates
Below are some rough postage prices for orders. Please note these are subject to change and are only a rough guide. For a more accurate postage estimate please use the Postage Calculator at the basket.
UK 3-5 day Standard
£6.95
From
Dispatched with 24hr UK mainland
£8.95
From
Highlands / Islands
£24.99*
From
* Please note that Scottish Highlands, and Islands postage prices can vary wildly. Please refer to the Postage Calculator at the basket for the lowest possible price.
Returns
We want you to be absolutely happy with our products and services, so we provide the simple Patrol Base guarantee: if on receiving your item you are unhappy with your item for any reason then simply send it back to us. We will replace or refund the item.
You can return any item for any reason whatsoever, even if you have just changed your mind, within 14 days of receipt of the order. This is in addition to your rights under the Consumer Protection (Distance Selling) Regulations 2000.
For more information on returning products, and how to do it please visit our Returns Policy Page.
Description
Quick Start Guide
- Charge your Battery: We recommend a 9.6V 1600mAh NiMH battery for this AEG. Please note: a battery and charger are NOT included with this product. Plug your charger into a 3-Plug UK wall socket and connect the mini-Tamiya connector on your battery to the corresponding connector on your NiMH charger. Your charger will cut off when your battery reaches capacity, but you should never leave it on charge unattended. We recommend using a Battery Safe Charging Bag for charging and storing your battery.
(Battery capacity mAh / charge rate mA) x 1.5 = Hours to charge
- Fill your speed loader: Open the hatch on the top and pour BBs in. Press the button on the side to deploy the thumb plunger. A speed loader is required to load the included medium-capacity magazine. If you don't have one, find them here: Airsoft Speedloaders
- Load your magazine: Position your speedloader to align with the port on the top of your magazine. Holding the speedloader firmly against the magazine, push the thumb plunger repeatedly until it becomes firm.
- Put on your Eye Protection: Safety when using Airsoft guns should be your number 1 priority. Always wear eye protection before loading your AEG and ensure any spectators are also protected.
- Connect your battery: Remove the butt plate from your stock by pressing the tabs on either side, then lifting it free. Inside the central tube, you'll find the min-Tamiya connector. Position each of the cell groups of your battery inside the tubes on either side of the stock, then connect the Mini-Tamiya connectors. With your wiring neatly tucked in, replace the butt plate.
- Insert your magazine: With the fire selector switch set to "SAFE" and the barrel pointed in a safe direction with your finger off the trigger, insert your magazine by pushing it up into the magazine well.
- You're now ready to shoot! - Never shoot at animals or humans who aren't in an Airsoft skirmish
About the Colt® x Daniel Defense® MK18 Sportline AEG
Starting at the tip of the alloy outer barrel, we are met with a polymer birdcage flash hider with 14mm CCW male threading beneath. The common 14mm CCW male threading allows alternative flash hiders, tracers or suppressors to be mounted, a key feature for customisation.
After the flash hider, we come to the MK18 handguard, equipped with 20mm Picatinny rails at the 3, 6, 9 and 12 o'clock positions, giving you plenty of space to fit 20mm Picatinny accessories. The lower section of the handguard can be removed to allow an M203 grenade launcher to be mounted, just like the real thing. Running along the length of the handguard, we have licensed Daniel Defense trademarks, proudly displaying the endorsement of the manufacturer behind the real MK18 rifle.
The receiver also features a 20mm Picatinny rail, allowing red dot sights or scopes to be mounted with ease. The MK18 has a set of polymer flip-up aperture iron sights pre-installed on this rail, which are fully adjustable. These can either serve as primary sights or be removed, as they are rail-mounted.
Next up, we reach the receiver, featuring licensed Colt trademarks on the left side of the magazine well, perfectly matching the real steel military-issue MK18 build, which is based on Colt receivers. The magazine release is on the right side of the magazine well and is accessible for a right-handed user with their trigger finger or by a lefty using their off-hand thumb.
The fire selector lever can be found just above the pistol grip, on the left side of the AEG, providing 3 modes of fire: SAFE, SEMI, and AUTO, with a 90-degree throw between each.
Pulling back the charging handle, at the rear of the receiver, provides access to the rotary HOP-up adjuster. The HOP-up allows you to adjust the amount of backspin applied to your BBs and extend range with heavier ammo, seeking the flattest possible trajectory.
The pistol grip is an M16A2/M4A1 style pistol grip, featuring diamond checkering on either side and linear texture on the back to provide excellent gripping qualities, whether you wear gloves or not. The finger ridge helps you keep hold of the rifle when held in a single hand.
The Crane stock features a pair of QD sling sockets, one on each side, allowing QD sling swivels to be fitted. Conventional sling slots are also present for those who prefer the old-fashioned way. The butt plate is also made from grippy rubber, ensuring your MK18 doesn't slip off your shoulder at a critical moment.
Features
- High-density polymer build - Alloy outer barrel
- Available in Pre Two-tone Blue or Pink - No UKARA needed!
- Licensed trademarks from Colt® & Daniel Defense® via EMG - Authentic looks
- 6.03mm Tightbore inner barrel - Great accuracy potential
- In-line MOSFET/ETU Pre-installed - No trigger lockups, rapid trigger response
- Bird cage style flash hider - Suits the MK18 build perfectly
- 14mm CCW Male threaded outer barrel - Tracer/suppressor ready
- Quad 20mm Picatinny railed handguard - Ready for 20mm Picatinny accessories
- Flip-up aperture iron sights pre-installed - Adjustable for windage and elevation, 2 apertures to choose from
- 20mm Picatinny railed receiver - Ready for red dot sights, PEQ lasers or scopes to be mounted
- Rotary adjustable HOP-up unit - The latest M4/AR-15 design, holds its setting well and allows for fine adjustment
- Finger ridged "A2" pistol grip - Comfortable for most hand sizes, textured for extra traction
- Flat milspec trigger guard - Matches real US Army issued M4A1 and MK18 rifles
- 3-Position fire selector switch - SAFE, SEMI AUTO & FULL AUTO, 90-degree throw between each mode
- 6-Position M4/AR-15 buffer tube - Adjust the stock quickly and easily to suit your body type or loadout
- Crane stock pre-installed - Plenty of battery space, QD sling sockets built-in
- Rear wired: Mini-Tamiya battery connector - Recommended battery: 9.6V 1600mAh NiMH
- Version 2 Gearbox:
- Alloy shell
- 8mm bushings
- Quick-change spring system
- Steel 18:1 ratio gearset
- In-line ETU/MOSFET
- Compatible with M4/AR-15 AEG magazines - Plenty of spare mag options!
- OEM: King Arms
Suggested accessories
- Recommended Battery: 9.6V 1600mAh NiMH Battery in Crane/Nunchuck Configuration
- Recommended Charger: NUPROL Compact NiMH Charger | Battery Safe Charging Bag
- Spare Magazines: Steel Mid-cap Magazine [VIDEO] | Steel High-cap Magazine [VIDEO]
- Red Dot Sight & Lens protector: Vector Optics IPM Open Reflex Sight | HASTA Lens Protector
- Front Grips : FMA Angled Support Foregrip | Element Stubby Vertical Foregrip | Big Dragon Vertical Foregrip
- Tactical Flashlights: WASDN V600 Scout Flashlight | Vector Optics Cyclops Vertical Grip Flashlight
Package Includes
- King Arms Colt® x Daniel Defense® MK18 Sportline AEG
- 140rnd Mid-cap magazine
Specification
General
 | Assault Rifle |
|---|---|
 | Yes |
 | Yes, No, |
 | Yes |
 | Magazine |
 | Beginner Player |
 | Li-Po Li-Po - Never Leave Charging Unattended Li-Po - Only Use Approved Chargers Li-Po - Charge in a Fire Safe Area |
Testing
 | Approx.347fps ± 10%, using 0.20g BBs |
|---|---|
Testing Notes | Tested using 0.20g Delta Armory Diamond BBs |
Weight and Dimension
 | Approx.1.65KG |
|---|---|
 | 70cm |
 | 78.5cm |
Construction
 | Black, Pre Two-Tone Blue, Pre Two-Tone Pink, |
|---|---|
 | High-density polymer flash hider, outer barrel, receiver, buffer tube, stock & pistol grip. Alloy body pins. Steel screws. Rubber butt plate. |
OEM | King Arms |
Official License | Colt, Daniel Defense, |
Weapon Specific
 | Electric |
|---|---|
 | M4 / AR-15 / M16 |
 | Most M4/AR-15 AEG Magazines |
 |    |
 | Trigger Lock |
 | Right Handed |
 | Standard |
 | 1:1 |
 | 0.25g |
Hop-Up
 | Rotary |
|---|---|
 | Inside the ejection port, accessible with the charging handle pulled and held back. |
Furniture
 |
|
|---|---|
 | 20mm RIS / RAS, 20mm Railed Outer Barrel, |
 | Sliding, M4 Crane Stock, Multi-Position, |
| 6 |
 | Aperture Iron Sight |
 | Stock, QD, Loop, |
Barrel
Outer Barrel Length (in) | 10.5'' |
|---|---|
 | Male |
 | CCW (Counter Clockwise) |
 | 14mm |
 | 6.03mm |
 | 260mm |
Magazine Specific
 | AEG, Medium Capacity, |
|---|---|
 | Approx. 140 Rounds |
Electric Gun Specific Information
Gearbox
 | V2 Gearbox |
|---|---|
 | Rear Wired |
 | Yes |
 | Yes |
Motor
 | Standard |
|---|
Battery Specific
 | 7.4V |
|---|---|
 | Li-Po |
 |  |
 | Stick or Crane configuration |
Size guide
Joule Charts
Special Instructions
These table can be used as a reference to see if the BB weight you are using will be over acceptable Joulage limits at some Airsoft Sites in the UK. To check if the weight can be used chrono your weapon using the BB you intend to use, and then compare it to the chart.
FPS, Power and Joule Limits can vary from site to site, so please get in touch with where you're going to play with in advance to avoid disappointment.
Suggested limits are based on Joulage Limit rules used Halo Mill: Proving Grounds, with a 350fps limit for Automatic Replicas, 400fps for Semi-Automatic Replicas, and 500fps for Bolt Action Replicas.
Tap the tabs below to open the relevant chart for your replica.
This table should be used for reference, and cannot be used to check one weight against another, as the weight of the BB affects the power.
In order to check if the BB can be used with your replica chronograph using the weight you wish to use and then compare it against the table.
Every time you change weights you will need to re-chrono and check against the table. This is not a conversion chart between weights.
Suggested limits are based on Joulage Limit rules used Halo Mill: Proving Grounds, and is the equivalent of 350fps, using 0.20g BB resulting in an upper limit of 1.14j.
| Velocity | BB Weight (Grams) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| FPS | 0.20 | 0.25 | 0.28 | 0.30 | 0.32 | 0.36 | 0.40 | 0.43 | 0.45 | 0.50 |
| 250 | 0.58 | 0.73 | 0.81 | 0.87 | 0.93 | 1.05 | 1.16 | 1.25 | 1.31 | 1.45 |
| 260 | 0.63 | 0.79 | 0.88 | 0.94 | 1.00 | 1.13 | 1.26 | 1.35 | 1.41 | 1.57 |
| 270 | 0.68 | 0.85 | 0.95 | 1.02 | 1.08 | 1.22 | 1.35 | 1.46 | 1.52 | 1.69 |
| 280 | 0.73 | 0.91 | 1.02 | 1.09 | 1.17 | 1.31 | 1.46 | 1.57 | 1.64 | 1.82 |
| 290 | 0.78 | 0.98 | 1.09 | 1.17 | 1.25 | 1.41 | 1.56 | 1.68 | 1.76 | 1.95 |
| 300 | 0.84 | 1.05 | 1.17 | 1.25 | 1.34 | 1.51 | 1.67 | 1.80 | 1.88 | 2.09 |
| 310 | 0.89 | 1.12 | 1.25 | 1.34 | 1.43 | 1.61 | 1.79 | 1.92 | 2.01 | 2.23 |
| 320 | 0.95 | 1.19 | 1.33 | 1.43 | 1.52 | 1.71 | 1.90 | 2.05 | 2.14 | 2.38 |
| 325 | 0.98 | 1.23 | 1.37 | 1.47 | 1.57 | 1.77 | 1.96 | 2.11 | 2.21 | 2.45 |
| 328 | 1.00 | 1.25 | 1.40 | 1.50 | 1.60 | 1.80 | 2.00 | 2.15 | 2.25 | 2.50 |
| 330 | 1.01 | 1.26 | 1.42 | 1.52 | 1.62 | 1.82 | 2.02 | 2.18 | 2.28 | 2.53 |
| 335 | 1.04 | 1.30 | 1.46 | 1.56 | 1.67 | 1.88 | 2.09 | 2.24 | 2.35 | 2.61 |
| 340 | 1.07 | 1.34 | 1.50 | 1.61 | 1.72 | 1.93 | 2.15 | 2.31 | 2.42 | 2.68 |
| 345 | 1.11 | 1.38 | 1.55 | 1.66 | 1.77 | 1.99 | 2.21 | 2.38 | 2.49 | 2.76 |
| 350 | 1.14 | 1.42 | 1.59 | 1.71 | 1.82 | 2.05 | 2.28 | 2.45 | 2.56 | 2.85 |
| 355 | 1.17 | 1.46 | 1.64 | 1.76 | 1.87 | 2.11 | 2.34 | 2.52 | 2.63 | 2.93 |
| 360 | 1.20 | 1.51 | 1.69 | 1.81 | 1.93 | 2.17 | 2.41 | 2.59 | 2.71 | 3.01 |
Suggested limits are based on Joulage Limit rules used at Halo Mill: Proving Grounds, and is the equivalent of 400fps, using 0.20g BB resulting in an upper limit of 1.49j.
| Velocity | BB Weight (Grams) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| FPS | 0.20 | 0.25 | 0.28 | 0.30 | 0.32 | 0.36 | 0.40 | 0.43 | 0.45 | 0.50 |
| 250 | 0.58 | 0.73 | 0.81 | 0.87 | 0.93 | 1.05 | 1.16 | 1.25 | 1.31 | 1.45 |
| 260 | 0.63 | 0.79 | 0.88 | 0.94 | 1.00 | 1.13 | 1.26 | 1.35 | 1.41 | 1.57 |
| 270 | 0.68 | 0.85 | 0.95 | 1.02 | 1.08 | 1.22 | 1.35 | 1.46 | 1.52 | 1.69 |
| 280 | 0.73 | 0.91 | 1.02 | 1.09 | 1.17 | 1.31 | 1.46 | 1.57 | 1.64 | 1.82 |
| 290 | 0.78 | 0.98 | 1.09 | 1.17 | 1.25 | 1.41 | 1.56 | 1.68 | 1.76 | 1.95 |
| 300 | 0.84 | 1.05 | 1.17 | 1.25 | 1.34 | 1.51 | 1.67 | 1.80 | 1.88 | 2.09 |
| 310 | 0.89 | 1.12 | 1.25 | 1.34 | 1.43 | 1.61 | 1.79 | 1.92 | 2.01 | 2.23 |
| 320 | 0.95 | 1.19 | 1.33 | 1.43 | 1.52 | 1.71 | 1.90 | 2.05 | 2.14 | 2.38 |
| 330 | 1.01 | 1.26 | 1.42 | 1.52 | 1.62 | 1.82 | 2.02 | 2.18 | 2.28 | 2.53 |
| 340 | 1.07 | 1.34 | 1.50 | 1.61 | 1.72 | 1.93 | 2.15 | 2.31 | 2.42 | 2.68 |
| 350 | 1.14 | 1.42 | 1.59 | 1.71 | 1.82 | 2.05 | 2.28 | 2.45 | 2.56 | 2.85 |
| 360 | 1.20 | 1.51 | 1.69 | 1.81 | 1.93 | 2.17 | 2.41 | 2.59 | 2.71 | 3.01 |
| 370 | 1.27 | 1.59 | 1.78 | 1.91 | 2.03 | 2.29 | 2.54 | 2.73 | 2.86 | 3.18 |
| 380 | 1.34 | 1.68 | 1.88 | 2.01 | 2.15 | 2.41 | 2.68 | 2.88 | 3.02 | 3.35 |
| 390 | 1.41 | 1.77 | 1.98 | 2.12 | 2.26 | 2.54 | 2.83 | 3.04 | 3.18 | 3.53 |
| 400 | 1.49 | 1.86 | 2.08 | 2.23 | 2.38 | 2.68 | 2.97 | 3.20 | 3.34 | 3.72 |
| 410 | 1.56 | 1.95 | 2.19 | 2.34 | 2.50 | 2.81 | 3.12 | 3.36 | 3.51 | 3.90 |
Suggested limits are based on Joulage Limit rules used at Halo Mill: Proving Grounds, and is the equivalent of 500fps, using 0.20g BB resulting in an upper limit of 2.32j.
| Velocity | BB Weight (Grams) | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| FPS | 0.20 | 0.25 | 0.28 | 0.30 | 0.32 | 0.36 | 0.40 | 0.43 | 0.45 | 0.50 |
| 250 | 0.58 | 0.73 | 0.81 | 0.87 | 0.93 | 1.05 | 1.16 | 1.25 | 1.31 | 1.45 |
| 260 | 0.63 | 0.79 | 0.88 | 0.94 | 1.00 | 1.13 | 1.26 | 1.35 | 1.41 | 1.57 |
| 270 | 0.68 | 0.85 | 0.95 | 1.02 | 1.08 | 1.22 | 1.35 | 1.46 | 1.52 | 1.69 |
| 280 | 0.73 | 0.91 | 1.02 | 1.09 | 1.17 | 1.31 | 1.46 | 1.57 | 1.64 | 1.82 |
| 290 | 0.78 | 0.98 | 1.09 | 1.17 | 1.25 | 1.41 | 1.56 | 1.68 | 1.76 | 1.95 |
| 300 | 0.84 | 1.05 | 1.17 | 1.25 | 1.34 | 1.51 | 1.67 | 1.80 | 1.88 | 2.09 |
| 310 | 0.89 | 1.12 | 1.25 | 1.34 | 1.43 | 1.61 | 1.79 | 1.92 | 2.01 | 2.23 |
| 320 | 0.95 | 1.19 | 1.33 | 1.43 | 1.52 | 1.71 | 1.90 | 2.05 | 2.14 | 2.38 |
| 330 | 1.01 | 1.26 | 1.42 | 1.52 | 1.62 | 1.82 | 2.02 | 2.18 | 2.28 | 2.53 |
| 340 | 1.07 | 1.34 | 1.50 | 1.61 | 1.72 | 1.93 | 2.15 | 2.31 | 2.42 | 2.68 |
| 350 | 1.14 | 1.42 | 1.59 | 1.71 | 1.82 | 2.05 | 2.28 | 2.45 | 2.56 | 2.85 |
| 360 | 1.20 | 1.51 | 1.69 | 1.81 | 1.93 | 2.17 | 2.41 | 2.59 | 2.71 | 3.01 |
| 370 | 1.27 | 1.59 | 1.78 | 1.91 | 2.03 | 2.29 | 2.54 | 2.73 | 2.86 | 3.18 |
| 380 | 1.34 | 1.68 | 1.88 | 2.01 | 2.15 | 2.41 | 2.68 | 2.88 | 3.02 | 3.35 |
| 390 | 1.41 | 1.77 | 1.98 | 2.12 | 2.26 | 2.54 | 2.83 | 3.04 | 3.18 | 3.53 |
| 400 | 1.49 | 1.86 | 2.08 | 2.23 | 2.38 | 2.68 | 2.97 | 3.20 | 3.34 | 3.72 |
| 410 | 1.56 | 1.95 | 2.19 | 2.34 | 2.50 | 2.81 | 3.12 | 3.36 | 3.51 | 3.90 |
| 420 | 1.64 | 2.05 | 2.29 | 2.46 | 2.62 | 2.95 | 3.28 | 3.52 | 3.69 | 4.10 |
| 430 | 1.72 | 2.15 | 2.40 | 2.58 | 2.75 | 3.09 | 3.44 | 3.69 | 3.86 | 4.29 |
| 440 | 1.80 | 2.25 | 2.52 | 2.70 | 2.88 | 3.24 | 3.60 | 3.87 | 4.05 | 4.50 |
| 450 | 1.88 | 2.35 | 2.63 | 2.82 | 3.01 | 3.39 | 3.76 | 4.04 | 4.23 | 4.70 |
| 460 | 1.97 | 2.46 | 2.75 | 2.95 | 3.15 | 3.54 | 3.93 | 4.23 | 4.42 | 4.91 |
| 470 | 2.05 | 2.57 | 2.87 | 3.08 | 3.28 | 3.69 | 4.10 | 4.41 | 4.62 | 5.13 |
| 480 | 2.14 | 2.68 | 3.00 | 3.21 | 3.42 | 3.85 | 4.28 | 4.60 | 4.82 | 5.35 |
| 490 | 2.23 | 2.79 | 3.12 | 3.35 | 3.57 | 4.02 | 4.46 | 4.80 | 5.02 | 5.58 |
| 500 | 2.32 | 2.90 | 3.25 | 3.48 | 3.72 | 4.18 | 4.65 | 4.99 | 5.23 | 5.81 |
| 510 | 2.42 | 3.02 | 3.38 | 3.62 | 3.87 | 4.35 | 4.83 | 5.20 | 5.44 | 6.04 |