This part is to make the MCS Helix mag speed-loadable with this L part that comes in 2 sizes. makes the spring and door activation go separate instead of them activating at the same time. but it stays a tricky thing to speed load a Helix mag with a speed loader like one from HazMat. any damage / ware from using on the door part can effect the activation of your mag.
the longer L (2885mm) part will bring the the tolerance closer of the door and spring activating.
but the down side will be. that the spring will activate will speed loading causing a paint break inside your mag and speed loader.
the shorter L (2870mm) part will give you a bigger tolerance of the door and spring activation.
but the down side can be that it will not activate the spring at all. so it the mag will not feed at all
if the L part is to short than the mag will not loaded by your speed loader and the spring will not be activated in your marker
so test each mag a view times and it is "normal" that some mags need the shorter one or the longer. one again this will have something the do with the wear on your door part. so bring some extras when going on a event in case it its needed to use a different L part
shell: Wall line count: 4