A&K K4-STW LONG / PTW "M4 KEYMOD" S-AEG (free from 18 y.)
![](https://www.begadi.com/media/wysiwyg/avs/fsk18v2.png)
Shipping possible from the age of 18 due to age check.
![](https://www.begadi.com/media/wysiwyg/avs/fsk18v2.png)
Possession permitted from the age of 18. This Airsoft is subject to the prohibition of carrying!
You can see details of the shipping service providers when you are logged in.
For your orders with Begadi, we use a system based on two-step authentication, as required by law. The age of the account holder and the age of the recipient of the goods are checked.
The check is automated, convenient and GDPR-compliant! No data is stored.
Importer: Begadi
System: S-AEG (= electrically operated, only semi-automatic)
Caliber: 6mm
HopUp: yes, adjustable
Material: metal and plastic parts
Magazine capacity: 120 rounds (MidCap)
Energy:approx. 1,5 - 1,6 J.
Total length: approx. 860 - 960mm
Barrel length: 497mm
Weight: approx. 3350 / 3700g (without/with magazine)
PTB approval: details see here
This revised version is based on the 2012 PTW version and contains many improvements to the previous version of the A&K PTW in terms of durability of the mechanical parts and electronics: more durable stainless steel cylinders, boltcatch mechanism with magnet and a completely revised electronics that works reliably, as well as a revised Hop Up Unit, which provides for uncomplicated and user-friendly maintenance by using AEG HopUp rubbers.
This makes the A&K STW models a high quality, reliable and much more cost effective alternative to the PTW models with all the advantages that the PTW system brings: fast response, easy cylinder change, true M4 dimensions and a bolt mechanism that stops the airsoft as soon as the last BB is fired.
Features:
- Full metal construction, use of different colored metals for a realistic look
- Outer barrel, dust cover, forward assist knob & pins made of steel
- Other metal parts made of die cast aluminum
- Stock and pistol grip made of polymer plastic
- Exact dimensions like the sharp prototype
- Throttle linkage faithfully replicated
- CNC machined Keymod handguard
- Adjustable metal flip up sights (removable)
- 14mm (neg.) thread for attaching silencers
- Cylinder quick change system (Systema PTW compatible)
- M130 Cylinder included
- New Hop Up design, adjustment possible without tools
- Reinforced stainless steel cylinder with reworked seal
- Cap catch is now realized by a magnetic system
- New improved electronics
- High current DEAN plug
- All BBs from the magazine can be fired
- Functioning Bolt Catch: The Airsoft stops firing when the magazine is empty and has to be
be reactivated via the bolt catch after changing the magazine - Loading Tool included in delivery
Accessories & Downloads:
- STW / PTW Magazine [MAG Airsoft + A&K]
- A&K K4-STW / PTW Steel Cylinder M90 + M110 + M130
- A&K K4-STW / PTW spare parts
- A&K K4-STW CQB / PTW Instruction manual
- A&K K4-STW Video Review (YouTube, REAPERs Airsoft)
- A&K K4-STW Video Review (YouTube, vid0005 Airsoft)
Recommended Upgrade Parts:
- ETiny PTW Motor
- ETiny Control Unit for PTW
- Etiny Power Unit for PT W
- ETiny Selector Switch for PT W
- ETiny PTW Motor Carbon
- ORGA PTW / STW HopUp Unit Set
- Systema PTW M4 Inner Barrel Assembly
- Systema PTW Spare Parts
- Orga PTW 6.00mm Complete Barrel Kit -497mm- (free from 18 years)
Suitable batteries (examples, other batteries with the same dimensions also fit):
Please use only 11.1V Lipo batteries. With weaker batteries the system will not work properly.
- Begadi "AMAX Superio" LiPo battery 11,1V 1500mAh 30/60C+ "Regular Triple Stick" -gold colored-
- Begadi "AMAX Superio" LiPo battery 11,1V 1500mAh 30/60C+ "Compact Triple Stick" -gold color-
- Begadi "AMAX Superio" LiPo Battery 11.1V 1500mAh 30/60C+ Single Stick" -gold color-
- Begadi "AMAX Superio" LiPo Battery 11,1V 1200mAh 30/60C+ "Single Stick" -gold color-
- Begadi "AMAX" LiPo Battery 11.1V 1200mAh 20C Single Stick with Dean
Improvements over previous versions:
- The accuracy of fit has been significantly increased
- The haptics was improved
- The Boltrelese is held via magnets, no longer pressed on via spring
- Factory fitted with Dean connectors
- Engine was revised
- Cylinder made of stainless steel with fine threads to the cylinder edge
- Magazines were revised and the haptics improved
- Higher quality workmanship of plastic parts/attachments
- New barrel and hopup concept
Please note:
Systema/FCC compatible tuning barrels no longer fit the hopup unit! However, complete Systema / FCC hopup/barrel combinations still fit the system. The New Barrel / Hopup combination now uses regular AEG hopup rubbers, but a special inner barrel! No AEG tuning barrels fit!
Suitable accessories / possible attachments:
- SHS Optical Fiber Steel Flashhider
- UFC PEQ 15 battery box, black [UFC-BA-BB-26C]
- BEGADI Short Fore Grip - black
- CYMA Angled Fore Grip / Front Grip - black
- 5KU Socom 556 QD Silencer with 14mm- Flashhider, black
- Begadi "Kilo" Silencer with Flashhider, black - long
![](/catalog/images/b-17817014-aundk-k4-stw-ptw-long-keymod-saeg-v2023-details1.jpg)
![](/catalog/images/b-17817014-aundk-k4-stw-ptw-long-keymod-saeg-v2023-details2.jpg)
![](/catalog/images/b-17817014-aundk-k4-stw-ptw-long-keymod-saeg-v2023-details3.jpg)
![](/catalog/images/b-17817014-aundk-k4-stw-ptw-long-keymod-saeg-v2023-details4.jpg)
![](/catalog/images/b-17817014-aundk-k4-stw-ptw-long-keymod-saeg-v2023-details5.jpg)
![](/catalog/images/b-17817014-aundk-k4-stw-ptw-long-keymod-saeg-v2023-details6.jpg)
![](/catalog/images/b-17817014-aundk-k4-stw-ptw-long-keymod-saeg-v2023-details7.jpg)
![](/catalog/images/b-17817014-aundk-k4-stw-ptw-long-keymod-saeg-v2023-details8.jpg)
![](/catalog/images/b-17817014-aundk-k4-stw-ptw-long-keymod-saeg-v2023-details9.jpg)
![](/catalog/images/b-17817014-aundk-k4-stw-ptw-long-keymod-saeg-v2023-details10.jpg)
![](/catalog/images/b-17817014-aundk-k4-stw-ptw-long-keymod-saeg-v2023-details11.jpg)
![](/catalog/images/b-17817014-aundk-k4-stw-ptw-long-keymod-saeg-v2023-details12.jpg)
![](/catalog/images/b-17817014-aundk-k4-stw-ptw-long-keymod-saeg-v2023-details13.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details1.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details2.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details3.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details4.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details5.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details6.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details7.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details8.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details9.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details10.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details11.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details12.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details13.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details14.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details15.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details16.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details17.jpg)
![](/catalog/images/b-aunk-stw-ptw-internals-details18.jpg)