Changing modules by itself after taking off muzzle

Hello! I have already saw this problem in beta, but thought that this issue will be fix on release.
If you want to use all 100 customization point for weapon and you delete muzzle from weapon and use another upgrade instead of muzzle, then game will automatically change it back after EVERY match (and delete your upgrade).

For example mine M4a1.
I use:
1) sight 1.0x (10 points)
2) Mag catch (5 points)
3) Lightweight bullets (10 point)
4) 36 round magazines (15 points)
5) angled underbarrel (25 points)
6) short barrel (15 points)
*7) flash hider muzzle (10 points)

Sum of this upgrades is 90 points.
I want to delete flash hider and use 50mw green laser (20 points)
I use all 100 of my points, but I have to delete muzzle.

And after EVERY match game equips back muzzle and just delete laser from weapon.
How can I save preset of my weapon the way when game cannot change my upgrades?