Hk416 A5 AEG bucking and nub upgrade

[Markyt001]

Hi all.

I’m looking to slowly upgrade my HK416 A5 aeg (Umarex) and was wondering if anyone can recommend a good bucking and nub combo and also a barrel upgrade?

Running 0.32gs BBs mostly in woodland skirmishes.

Was considering a Maple Leaf MR 50deg with
a Maple Leaf Solid edition Omega nub???

No idea about what barrel upgrade so any advice would be very welcomez

Thanks

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