Automatic magazine fed gun (with 1 mag)

This is a modified version of my magazine-fed bolt-action gun, now fully automatic, making it more straightforward to shoot. Loading Instructions: After unfreezing, switch to the grab tool, grab the black steel sphere on the back of the mag racking slider, and give it a quick, firm upward slam, racking the magazine into the gun. It's fully inserted when the black blocks of the mag are just below the white blocks on the gun, about a quarter of a block down. Once successfully completed, move on to firing. Firing Instructions: Once the magazine is correctly inserted, to fire, press the motor's hotkey (default is mouse4). The gun will shoot its magazine empty, allowing you to move on to reloading. Reloading Instructions: To reload, with the mag empty and the gun's bolt and crank in the home position, grab the green sphere on the left side and give it a small pull to the left. This drops the empty mag, which can be discarded. Place a fresh mag on the mag-racking slider and rack it into the gun. Notes: If you turn off the motor (by looking at it and pressing Shift+E), you can then manually shoot the gun by grabbing the blue sphere on the left side and rotating it around its cycle. IMPORTANT!:Be sure to only run it on max update rate and max constraint accuracy or it WILL NOT WORK RELIABLY!