12th Model collar profile....

[pathfinderheli]

Does anyone know where i can get a 16 in or even a 14.5 in barrel with a profile that will fit the 12th Model collar?

I have a Mk 12 that i use the 12th model with and im wanting some other options. Thanks for any info that can be passed along.

[Waveman]

Ops Inc has M4 government profile muzzle brakes and collars. I may have said more than I know about the profile, I ordered barrel from Brovo Company and the Ops Inc brake and collar went right on and worked great. PM Ron, he is a good guy.

I am trying to get a custom brake and collar for my grendel 18" barrel. No word yet.

[the_accuser]

Contact ADCO Firearms, I'm sure they can hook you up.

[k31user]

We have a collar for putting a 12th on a standard 14.5 or 16" M4 contour barrel. Of course no 2 barrels are ever machined the same these days.

[pathfinderheli]

I measured my barrel... It was profiled and dimpled by ADCo... The mircometer gave me .722 I'm assuming that I am going to need something custom and the standard .750 would not work? Thanks for any insight that can be passed along.

[the_accuser]

I measured my barrel... It was profiled and dimpled by ADCo... The mircometer gave me .722 I'm assuming that I am going to need something custom and the standard .750 would not work? Thanks for any insight that can be passed along.

I thought I saw a post on another forum where ADCO said they can make custom collars if needed.

http://www.ar15.com/forums/t_2_130/2084 ... llar_.html

[garandman]

My Fulton Armory Titan FAR barrel worked well.

And I do beleive ADCO can make whatever collar you need.