while i am not familiar with the kinds / categories of buffer you mentioned to above , i just know that the buffer that comes with the CQA rifle is good enough to do the work. I have changed the buffer of my CQA and put a Mil spec one just to fit a Feb defense stock , but truly speaking , when i saw thr two buffers (CQA factory buffer and Mil spec buffer to replace it) , i regret the decision . But since i had already expanded the amount on Feb defense stock and it was not fitting on factory buffer tube of CQA, i had to change it just to justify the purchase of Mil spec buffer and Feb defense stock . So in my opinion , the buffer of CQA is quite good to do the work and it is not imperative to change it with a view to enhance the performance . Your millage may varie