[ao_tenshi]

Wussup guys!

I've been having serious feeding issues after doing some upgrades to my VFC M4. Hoping to learn from the experienced folks here on how to systematically diagnose and locate what is the cause of the feeding problem.

Symptom:
- BBs does not appear to feed into the chamber
- I get 1 or 2 actual BB’s shot out with 5 or more trigger pulls on semi
- On auto, it shoots like 1 to 2 real shots with about 10-20 cycles

Current Setup:
VFC VR16 M4 base gun
- Lonex hop up chamber
- Lonex cylinder
- Lonex nozzle
- Modify flat hop bucking
- Modify 16:1 modular gear set
- SHS v2 tappet plate
- M100 spring

I’ve tried different hi/mid caps and got same issue, so can rule out any magazine issue. My suspicions are below but I have not been able to verify them:
1) The nozzle and hop up are not to spec to allow the BB to enter the chamber?
2) The modular gear set is not allowing the tappet plate to move back far enough? （i.e. use sector gear delayer chip? but is that only for feeding issue with auto?)

I could be totally wrong but these are all I can think of for now, and will need the experience from the community from here.