AR15 barrel extension dimensions?

[Armedsask]

I need to know the dimensions of the AR15 barrel extension but do not currently have one on hand. If some one out there would be able to measure their up for me that would be great. The more precise the better. Micrometer measurements preferred.

These are the dimensions I need:

The first person to help me out gets a sneak peak at my dastardly plan!

Edit: found 'em no things to you guys.

 

[ONT0001]

Not sure but

here's a link to Sledgehammer's AR CAD files
maybe in there
ht p://www.biggerhammer.net/ar15/cad/
just put in t
ONT0001

 

[dangertree]

PM me your address and I'll send you one.