Trying to find out if a 10.5 barrel with a 10" KMR will leave enough room for a suppressor? I suppose some of it depends on the can and the mount, but outside my area of expertise…
You’ll need a 11.5" as the KMR has the wings on the side that extend past the threads on a 10.5"
Was afraid of that…doing 300BO…not much out there in 11.5"
If you go with a 9" KMR there is more than enough room. I went through the same process with my SBRs.
Rick
10" will likely NOT work. Remember about .5-.75" of the barrel is actually in the upper. I wouldn’t go with anything larger than 9.25"
According to BCM’s website, the KMR10 is 10.5" and the KMR9 is 9.4". The 9 should work well on a 10.5.
Here’s a KMR 10 mocked up over a BCM 11.5 for reference

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That helps…it is for some one else and I am trying to convince them to go for the AAC 12.5 barrel, thanks for everyone’s feedback.
Here’s a KMR 10 mocked over a Noveske 12.5" barrel for comparison.

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Awesome thanks.