GPMG / FN MAG58 / 240B 50 Round Drum Magazine Airsoft Conversion

thingiverse

This is a drop-in auto winding system for a 50 round drum magazine for a FN MAG58, 240 Bravo, GPMG etc. The following parts are needed: -Insert - Needs spring tubing to be added to the output tube that feeds into the MAG's hopup chamber. -Hop Up Chamber - Modeled exactly after the factory design, connects to the spring tubing. -Feed Wheel - Screws into the top of a servo (recommend metal gear servo & high torque rated for 3S lipo) -Inner Sleeve - This slides into the real steel box magazine and allows you to glue / adhere the insert to the inner sleeve, not the box mag, making this a TRUE drop in system. This system has worked extremely well at events and airsoft game days. I used a DC PWM motor speed controller and ran the servo in series with the gearbox motor wiring so that when the motor in the gearbox spun, the box mag servo will turn and feed the replica. You need a speed controller to "tune" the feed rate to your gearbox cycling rate. I tuned it to only misfire every 15 shots or so.