QB78D rail question

How long are the 11mm rail mounts on a QB78D?

I want to be sure that the scope mount I have is not too long for the 11mm groves cut into the barrel.

Thanks all.

4.625 up to the loading port
6.750 overall if your mount spans the port

Quote:

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Originally Posted by SeanMP

4.625 up to the loading port
6.750 overall if your mount spans the port

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Nice, thank you.