NVG Arm

this is my design for a short J-arm. there is also a dual option, also there are short and long arms aviable...
Its still untested on PVS-14, but id like to hear if it fits...

parts needed:

1x M3x30
1x M4x30 (2x with the dual)
1x M4 nut (2x with the dual)
1x 1/4-20x10.5mm with partial threads (recomend: https://www.amazon.de/gp/product/B01N1MYQX0/ref=ppx_yo_dt_b_asin_title_o00_s00?ie=UTF8&psc=1 2x with the dual)