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AR22 Dedicated Lower

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Creation quality: 4.5/5 (1 vote)
Evaluation of members on the printability, utility, level of detail, etc.

  • 2.1k views
  • 7 likes
  • 6 downloads

License
3D design format
STL Folder details Close
  • AR22 Lower WITH SUPPORT.STL
  • AR22-Back.STL
  • Gen 2 Head Plate.STL
  • Gen 2 Tail Plate.STL

Learn more about the formats

Publication date 2023-05-13 at 16:26
Design number 1218641

3D printer file info

3D model description

Credits to Hoffmann Tactical for Base Model

New Features of this Lower:
- resized pin holes for avoiding redrilling
- closed rear in favour of picatinny rail on back for customized foldable stock (coming soon both as single accessory and in bundle)
- modified a bit the depth of the front spring to avoid breakings of head plates due to high tension strength of spring over plastic
- removed hold open slot cuz in AR22 using CMMG conversion kit is not needed (you cannot break something that is not present in assembly)
- added "the famous" star on the side of the lower and on the back...

Use with standard AR Fire Control Group
Needed 2x DIN 912 UNI 5931 ISO 4762 M5x35
+ 2 nuts (M5 as well) DIN 934 ~ISO 4032

3D printing settings

Filament: Sunlu PLA+
No Support
80% infill, 50mm/s speed
Printing time 18h for the Lower

Same settings for BackPlate and both of front plats
Printing times:
Backplate 2h
Front plates 1h for both

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