barrel / hopup upgraded

[Royal10]

k, so i have a King Arms Colt metal M4 AEG. I replaced the 368mm inner barrel with a 363 Madbull stainless steel 6.03 inner barrel and i installed a Madbull metal hop up ( with the single adjustment gear). Now, as I fire, I seem to get a side spin going and I can't maintain a tight group (and yes I know proper firing techniques). Can anyone make a suggestion to what I could correct in the weapon to improve my grouping ??

[Danke]

If the BBs are hooking or slicing that means the nub/arm aren't at dead 12:00.

And for the rest you'll also need to post the weight of BBs and the range that your target is at.

[Royal10]

thanks, I thought it might have been the nub placement. I was firing BB Bastard 0.25g at approximately 80 ft.

[Wrath144]

In addition to what Danke said, the barrel may be sitting crooked in the hopup, or the rubber sleeve may be sitting crooked on the barrel.

[Royal10]

thanks Wrath144, I will double check everything in the hop up unit. The bucking did feel like it may not have been placed perfectly.

[SuperCriollo]

Also check whenever the barrel is straight or not, you would be surprised with the amount of stock guns that come with crooked inner barrels