element ak hop unit?

[SAS Scott]

Hey guys and gals im getting an element ak hop unit for my mp5k but are they any good as I. have heared so much good things said about the m4 hop.

Or should i get a tm or cyma unit.

Im also getting a vanaras 6.03 barrel are these also any good?

The stock unit I got is galaxy so anything will be an improvement.

Thanks for your help and time .