This is a custom designed airsoft m4 stock. It can hold any battery as long as it fits inside the buffer tube. Designed around a Specna Arms airsoft m4, but should fit any m4 with a standard buffer tube (print a small section first to ensure it fits).

Included are the files for the main stock, the butt plate, butt plate positioning pins and latches, as well as a thumb screw which is used to adjust the stock's position. Although this comes with a butt plate, it is also compatible with the butt plate from a Specna Arms ‘heavy ops stock’.

There is a diagram showing how everything comes together. Before glueing in latches check if they work properly and are oriented correctly. you might need to file the notches in the stock to adjust the fit.

Please comment if you have any suggestions/improvements on this model.

PRINTING INSTRUCTIONS:

I printed this stock in PLA Matte from Bambu Lab.

I recommend printing with the following settings:

Print the main stock and butt plate using standard 0.20mm Strength preset, change seam position to back, add 5mm brim, change sparce infil to Gyroid

Print the additional parts including screw using 0.08mm Extra fine or High Quality setting, change number of wall loops to 3 or 4.