A M249 underslung rail designed by myself, fits almost all airsoft minimi in the market [A&K, G&P, CA, blah blah). I've test it already and it works flawlessly.
PS. Some modification needed and you gonna need to have bolts nuts and washer on this list
-x9 m3x10mm
-x4 m3x15mm
M249_underslung_rail_mod_v1_all.stl | 2.4MB |