Block2 Build – Barrel Group

Prometheus 6.03mm stainless is used as per normal due to a current surplus in the lab. The standard R-hop is applied and left to cure.

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Stock VFC hop-up rubber is retained due to excellent temperature tolerance and good air-seal qualities. Hop nub is shaved to accommodate R-hop.

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The VFC hop-up unit is also retained due to its ease of adjustment as well as ability to hold it setting.

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