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CMMG RDB in competition

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For those that run the CMMG RDB in competition, what do you do to assure ejection or extraction reliability?

The general advice seems to be replacement of ejector springs and extractor springs.
1. Are there certain springs that do not need to be replaced at frequent intervals?
2. At what intervals do you replace springs?
3. What springs are you using?
4. With the extractors, do you also use the dampener and/or donut?
Are there other components that need to be changed for reliability?

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