@RainierArms-Sales

I am considering the RUM Mod 2 18” SPR barrel for build I am working on.

I would like to be able run this barrel with an Allen Engineering AEM5 suppressor which is basically a clone of th Ops Inc 12th Model suppressor.

The barrel description on your site says this barrel has an “improved MK12 profile”.  What exactly does this mean?  Are the profile dimensions different than a standard MK12 barrel?  Will there be any issues using the AE brake and suppressor collar?  Should I be concerned about possible suppressor fit issues?

I was told the gas port size on this barrel is .980.  Is this correct?  Have you done any extensive suppressed firing with it?  If so, were their any reliability issues?

I would shoot mostly 77gr Mk262 clones.  Is there a particular factory loading this barrel shoots extremely well?

Assuming the shooter does his part what type or accuracy/precision should be expected from this barrel?

Thanks!

Great questions.  I’ve got an inquiry into our barrel guy.  Will let you know when I hear back.  

Tag for interest

Awesome, I look forward to reading to what they say!

The improved portion of the barrel is under the handguard.  We made it a little thicker.  The Allen Engineering/Ops Inc 12th model mount will work just fine.  No changes made to the shelf for the collar.

Extensive suppressed fire will be cake for the barrel with the gas port.

We have had good results with Hornady 75gr TAP.  MK262 will shoot great as well.  ½ moa easy.

Thanks, that's what I needed to know.  

@RainierArms_Sales

One last question, do you recommed  doing a barrel break-in process for these barrels?  If so, how should it be done?

Thanks!

Click Here

Great, thanks!

Most welcome!