The MR139 is the first KAIDJU, launched in april 2018, and after 4 years of evolution, here the summer 2022 version, with a new plate design, wich is aio ready.
With m3 screws, the MR139 is quite light, and strong, with separated 2.5mm carbon arms, for 1106 or 1202.5 motors (4 holes).
The aerodynamic tpu canopy is free to download, and a 2mm carbon top plate is also available for classic design.
All the spare parts are made with 3K carbon and are available 24h/24 on Armattan Production at factory price.

• carbon parts 11.28g
  2mm bottom
  2.5mm arms
  11$ world wide shipping
  https://armattanproductions.com/pages/kit_detail/2254
  2mm top plate (optional)
  3.5$ world wide shipping
  https://armattanproductions.com/pages/product_details/21432

• screws (titanium screws save 5 grams)
  top plate build: 3 x 6mm, 9 x 8mm m3 screws, 3 x 20mm m3 standoof, 6 x m3 locknuts
  canopy build: 2 x 6mm, 6 x 8mmm, 2 x 10mm m3 screws, 1 x 20mm m3 standoof, 8 x m3 locknuts

• tpu elements
  canopy
  soft mount bumper (protect arms and reduce motors vibration)
  tpu top bumper (camera protection for top plate build)
  free downolad
  https://www.thingiverse.com/thing:3748518

• gear compatibility
  fc: 26.5 aio, 16x16, 20x20
  motors: 1103-1108 1202 1202.5 (4 holes)

• 70g - 80g recommanded setup (+650 2s / 3s lipo)
  26.5 aio, 16x16 or 20x20 stacks with 10a or more, 1202.5 motors 6500kv (3s) / 8000kv (2s) with 650mah lipo, new hdzero nano vidéo system, 3018x2 props

• KAIDJU line (all models):
  https://armattanproductions.com/pages/search_item?keyword=KAIDJU+

• community
  Join the "kaidju owner group" on facebook to share your Kaidju experience with other users

• video review (olders version but ever light and fast)
  outdoor:
  
  
  indoor:
  https://www.youtube.com/watch?v=B73ogamCSH4&t=13s