About this 3D model

?? 3DTAC is an online airsoft 3D printing brand. Our files work because they are super optimized for FDM printing by profesional designers and engineers ? Check out more 3DTAC 3D airsoft accessories here: http://bit.ly/3DTAC_Files This accessory adds 4" (10 cm) of usable picatinny rail on top of your M4/M16/AR15 style rifle's carry handle. Print the two pieces flat to the table and glue them together. You will need a 3/16 x 1" (4.8x25.5mm) screw and nut, the screw will go all through the part and into the carry rail handle, secure it with the nut. -- Please take into account that it is impossible for us to know all different dimensions and tolerances for each airsoft manufacturer and you may need to scale the part up or down accordingly. Be smart bout it ;) -- Disclaimer: 3DTAC models are provided "AS IS" with no optional files or means to convert or use the designs with FIREARMS. 3DNG-MX takes no responsibility for any harm received or inflicted or any property damage or destruction. This is an accessory designed for AIRSOFT ONLY.