Once this new O-ring is installed, it will ensure a snug fit to restrict the motion of the barrel that is inside the hop-up chamber. It will secure the inner barrel and maintains itself steadily locked in the true horizontal position. Even when shots are fired, which is the moment where there is the most stress and vibration at the hop-up, the O-ring will ensure the structure is intact. This in turn will create a dependable system for the BB to travel down the barrel undisturbed for the most consistent and accurate shots.
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