For Sale: CYMA MP5 SD6 – Fully Upgraded (Custom Conversion)

Up for sale is a CYMA MP5 SD6, which originally started as a CYMA Platinum MP5 SWAT model but has since undergone a full conversion and extensive upgrades to become a high-performance SD6 variant.

Externals:

• CYMA Platinum Upper & Lower Receivers

• JG 5-Position Stock (instead of the standard 3-position stock) for additional adjustability.

• Tokyo Marui MP5 Front End with integrated suppressor (can be easily converted to a tracer unit).

• Clone Trijicon MRO Scope

Hop-Up System:

• Stock MP5 Hop-Up Unit with a modified O-ring to prevent loss of hop adjustment (common issue with stock units).

• 50° Bucking Maple leaf Mr hop paired with a XT 300mm 6.03mm Stainless Steel Barrel for enhanced accuracy and consistent performance.

Compression System:

• Fully upgraded with premium parts, including:

  • Prometheus Cylinder

  • SHS Full Metal Rack Piston

  • Gate POM Piston Head

  • Maxx Nozzle with O-Ring

  • Gate EON Cylinder Head

  • M110 Spring cut down to fire at 1J (with a deviation of only 4FPS).

Internals:

• E&C Gearbox Shell, cleaned and polished for smooth operation.

• EZO J-Caged Bearings for better durability and performance.

• 16:1 SHS Gears (short-stroked by 2 teeth) with correct cylinder volume adjustment.

• Gate Aster MOSFET with USB link (Advanced Edition with fully customizable settings for improved trigger response and safety ) 

• Begdai Adjustable trigger ( Can be highly short stroked ) 

Motor:

• Warhead CNC Brushless Motor (30k RPM) for excellent torque and consistent performance, delivering a solid 25 RPS.

Magazines:

• 4x CYMA Polymer MP5 Mid-Cap Mags (130 rounds each)

  • Equipped with an upgraded spring for reliable feeding of 0.36g BBs at 25 RPS.

Performance:

This custom-built MP5 SD6 is a laser on the field, capable of hitting targets up to 40 meters (if not further) with great accuracy. It runs smoothly all day long without overheating, thanks to its upgrades. Ideally setup up is 0.32gb as this is what the barrel is volumed too. 

Condition:

The gun is in great condition and has been maintained regularly, but due to limited use, it’s just sitting in my collection gathering dust. The amount of money invested into this build is considerable, but it’s ready to give its next owner a top-tier performance experience. Also comes with a hard carry case. 

Firing Video 

Firing Video