**solved**We m4 cqbr

[waltherglocksmith]

How do I remove the part no.12 to be able to remove the front metal barrel to have access to the hopup assembly?, want to clean it and look at it,
got firing issue, all bb are stacking in the chamber, really tight and hard to remove at the base of the chamber where the hop up is.
thx!!

[Qlong]

You will have to remove the front triangle sight assembly, then the gas tube, then the delta ring.

[waltherglocksmith]

thanx,
in the meanwhile, I already find my way to dismount it, with punch and small wood hammer.
Solved the bb's stacking issue, removed all the hop up parts, cleaned it, and sand the inner hopop rubber until the bb's got really small friction. Then fired 10 mags with no more stacking issue. Nothing changed in accuracy, still really accurate! The hopup was way too stiff for nothing.