Hop up/ barrel help

My echo 1 g36c came with a madbull blue hop up bucking. The gun stock, still has terrible accuracy. 12in grouping at 40-50 ft. I want to put in a prommy 6.03 tbb and a new bucking but the barrel and bucking in the gun are sealed in the hop up chamber.

How could I remove the seal?

Any other suggestions to make accuracy better?

try using golden ball .20g bb's
madbull blue rox

what weight bb are you shooting now? I get my best accuracy with .25s

Well right now im using ksc .25 I think it might be the crappy clone barrel. Does anyone know how to remove the seal/glue?

how many shots have you fired? buckings and barrels have a break-in period and after that your shots will be more consistent

Clean your barrel with silicone and a cleaning rod that could help

i would also polish the inner barrel. if there is any movement or vibration in the barrel, it will affect consistency/accuracy.

There is no inner barrel wobble. Is there a guide
to polishing barrels? or could you exain how to do it?