AGM M4 GBB Replacement Hop Up Unit
 

Part of my hop up unit chipped/ broke off and I am looking for a cost effective replacement.

I have a Future Energy WA M4 Hop Up Unit that I bought (Ended up getting it for free) and when I received it, I realized they gave me the version that uses aeg inner barrels. I would need to buy a new inner barrel, bucking and possibly a outer barrel. (I heard aeg inner barrels dont fit gbb outer barrels)

Now I heard that the Future Energy Hop Up is not the greatest and now I am thinking of buying the G&P Hop Up Chamber Set. (it comes with a G&P inner barrel) I already have a spare G&P bucking in my possession.

Which choice would you recommend?

Thanks