The KS-1, is the first rifle developed in the Knights Stoner (KS) Carbine series by Knights Armament Company, developed as an improvement of their SR-16 series rifle. Adopted by the British Military from their Project Hunter / Future Commando Force modernisation program, it was selected and designated as the L403A1 - AIW (Alternate Individual Weapon), the rifle to supplement the L85A2 / A3 and L119A1 / A2 (Colt C7 & C8), where the UK Ministry of Defense press release emphasized the need to find an AR patterned platform that "shares much in common with the rifle system used by the many of the UK allies...", where it caught waves of interest from the airsoft and firearms community after making its debut appearance back in June of 2023 with the British Armed Forces, particularly in elements of its Strike Company and Surveillance and Reconnaissance Squadron of the Royal Marine Commandos and its newly reformed Ranger Regiment, being the first to receive its L403A1 variant at the end of 2023.
The KS-1 is more unique compared to most AR platforms of today, meeting the modern-day shooter demands by having a fully ambidextrous lower receiver, with the fire control safety, magazine release, and bolt catch/release mirrored to both sides of the rifle, one of the first few rifles with ambidextrous lower receivers fielded by the military after 2023.
The Angry Gun replicates the KS-1 as a conversion kit, developing it for the Tokyo Marui MWS M4 Series, developing this kit with quality CNC aluminum and CNC steel internals along with an anodised Matte Black finish for this kit. As a replication of its real steel cousin, the kit includes;
- CNC aluminum 6061-T6 MWS Upper and Lower Receiver set w/ Anodised Matte Black Finish
- CNC aluminum 13.7-inch dimpled barrel with the Stoner internal piston system design
- CNC Steel Gas Block
- Stainless Steel Gas Tube
- CNC aluminum 12.8-inch URX6 M-LOK handguard w/ Anodised Matte Black Finish
- CNC aluminum Ambi Charging w/ Anodised Matte Black Finish
- CNC aluminum 6 Position Buffer Tube w/ the Royal Marines Dagger Logo and Anodised Matte Black Finish
- Steel Mag Release, Bolt Catch, Ambi Bolt Catch, Ambi Safety
- Steel Forward Assist and Dust Cover w/ Anodised Matte Black Finish
- Steel QDC 3-Prong Flash Hider - 14mm CCW
- CNC aluminum End Plate Dual Point Sling Mount
- CNC Stainless Steel MWS Trigger Box Set
As this is a conversion kit, the following items are required to make this a working MWS GBB Rifle;
- Tokyo Marui MWS Spec. Inner Barrel (Recommend 250mm Length)
- Tokyo Marui MWS Spec. Hop-up Bucking
- Tokyo Marui MWS Spec. Hop-up Chamber
- Tokyo Marui MWS Spec. Hop-up Adjuster
- Tokyo Marui MWS Spec. Bolt Carrier Group with Nozzle
- Tokyo Marui MWS Spec. Buffer
- Tokyo Marui MWS Spec. Buffer Spring
- Tokyo Marui MWS Spec. AR / M4 MWS GBB Magazine
Angry Gun also offers the QDC/MCQ-PRT in for those interested in replicating the L403A1 build;
Dummy Version in Black or FDE!
Tracer Version (Acetech Blaster M) in Black or FDE!
The AG KS-1 Conversion Kit is also available in Anodised Black, Cerakote Magpul FDE or a Limited Deluxe Package w/ Cerakote Magpul FDE!
*Due to restrictions, this Conversion Kit cannot be sold to US Customers*
For more conversion kits, check out our Conversion Kit page!
Compatibility:
- Tokyo Marui AR / M4 MWS Spec.
- Picatinny Rail Interface
- M-Lok Rail Interface
Included:
- x1 CNC Aluminum KS-1 MWS Upper in Anodised Matte Black Finish
- x1 CNC Aluminum KS-1 MWS Lower in Anodised Matte Black Finish
- x1 CNC Ambi Charging Handle in Anodised Matte Black Finish
- x1 CNC Buffer Tube in Anodised Matte Black Finish
- x1 Outer Barrel
- x1 Steel Gas Block
- x1 Steel Gas Block Wrench
- x1 Steel URX6 Wrench
- x1 Stainless Steel Gas Tube
- x1 Steel Mag Release
- x1 Steel Ambi Mag Release
- x1 Steel Bolt Catch
- x1 Steel Ambi Bolt Catch
- x1 Steel Ambi Safety
- x1 Steel Forward Assist
- x1 Steel Dust Cover in Anodised Matte Black Finish
- x1 Steel QDC 3-Prong Flash Hider
- x1 CNC Aluminum End Plate Sling Mount
- x1 CNC Stainless Steel MWS Trigger Set
