you dont need to change orings on a regular bases.. just keep the bolt greased and make sure the reg isnt messed up. Its not that big of a deal.
Most people who buy brand new DP guns buy them because they are $400 or less. These people are usually new players who mess things up. Thats is why DP guns tend to be found in non working condition. You dont see too many high end guns being broken on the regular because people who can afford them tend to know how to keep them running or they pay someone to fix them when they do go down.
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