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Archived [ARCHIVED THREAD] - 450 Bushmaster Ejection Port
Posted: 6/27/2017 7:42:19 AM EDT
Can anyone tell me if there are schematics or measurements out there for the appropriate ejection port size for the 450B?

I have looked all over he'll and can't find anything on this.  I'm currently in the process of building one and will be blasting and cerakoting this once complete. I'd prefer to get it right the first time round.

Link Posted: 6/27/2017 8:43:59 AM EDT
[#1]
I would like the answer to this as well.

Link Posted: 6/27/2017 5:21:16 PM EDT
[#2]
Just places an order for my barrel.  While I had their tech on the phone I asked him- .645 is their standard opening for all large bore uppers.

That's good enough for me. Firing up the mill in 10!

Archived [ARCHIVED THREAD] - 450 Bushmaster Ejection Port
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