9mm AR Barrel Diameter

[NaOH]

Can someone mic the OD barrel diameter on a 9mm. I want to chop my Oly Arms 9mm and put on a AR flash hider and want to be sure it will fit.

Thanks.

 

[Striker]

I can't right now but if no one gets it for you..shoot me a PM to remind me. I'll be on the range at work next monday and can mic one for you.

 

[contact148]

the 9mm flash hiders are a different thread then the regular .223 flash hiders so you dont install on by mistake

Ill measure mine later

 

[contact148]

Ok my colt 9mm smg barrel is .625 on the unthreaded part

 

[NaOH]

Thanks. FYI the Oly Arms is 0.725. Not sure how a Colt FH will look but it shouldn't be enough to stand out.

 

[smgcon]

NaOH: Remember the AR15 barrel is .750 on the regular Govt Profile barrel in front of the gas block. It will look just fine. I did the same thing on an Oly Arms 9mm upper I bought from P&D four years ago.