Hey guys, got my E&C M4A1 receiver set today from China and it's all good except one thing.
Pulling back the charging handle doesn't open the dust cover, at all. The little "flag" that a lot of AEG M4's have on their charging handle, isn't on the E&C. No biggie, I have a spare specna one laying around so I'll fit it, I thought. The "flag" slides past the button on the dust cover and doesn't drop it.
On the E&C M4A1 upper, instead of the area being flat like a lot of standard M4 uppers, it has a small sphere shaped (Kind of?) cut out where the "flag" should slot into and push the dust cover retention pin down. I'm rather lost on what to look at for potential fixes, etc.
I also tried a specna m4 dust cover replacing the E&C one but the Specna was too short.
Any help greatly appreciated to help me finish my MK18 build 😬