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Mar 22, 2026 - 09:51 AM
We’ve provided several answers to questions related to PolarStar M249 Hollow Grip Bolt and Nut | HPA M249 Hose Bolt , see some other helpful Q&A related to this product.
Question: What size macro line can fit through the hollow grip bolt?
Answer: The hollow grip bolt is designed specifically for use with 6mm macro line. Using the correct size ensures a proper fit and prevents air leaks, which is crucial for optimal performance in HPA-powered airsoft setups.
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