You know that one piece?

[magsRus]

You guys no that one blue circluar disk that is between the bolt and the valve..i lost it ..is this bad?

[Cryer]

yes. very bad...


no, not really that bad, but it is important. It keeps the bolt from beating the crap out of the powertube when you fire. Go to the AGD Online store and order another one. Also, I think it comes in the parts kit...
Don't use the gun until you have another one.

[athomas]

The gun won't work properly without the bumper. There will be a new bumper in the parts kit. If you don't have a parts kit, you should get one from AGD. Its just a bit of comfort knowing your day won't be ended by a failed o-ring.

[joeyjoe367]

You can crack the power tube tip by not using a bumper.

Get a parts kit.