ATAMAN M2 carbine air port flow

[aldea6]

Hi, some days ago I bought an Ataman M2 carbine in .22 cal. For some legislation reasons it came underpowered .To decrease the power Ataman (or the dealer) has put an hex screw in the transfert port of the breech ,with a very small hole in the screw, thus reducing the air flow.Removing that screw gives the gun its full power.But..that means that the transfert port is now threaded, when the screw has been removed , so my question is: is it possible that the thread in the transfert port could decrease the air flow in some way , turbulences or drag , for example. Do you think it could be worth to remove the threads by drilling the port?

This is a bit technical , but if anybody has an idea , he's welcome.

Aldea6

 

[brian_null]

You could always drill out the hex screw... better yet, buy a bunch of hex screws and drill them out to different sizes for different flow rates.

 

[aldea6]

That's a clever idea . I'll do that first before drilling out .

 

[davidsng]

I have a M2R. I noticed it was under powered so I sent it off to get it looked at. How did you know that There was a screw at the transport? Did it say that some where?

 

[toma]

All m2 had that screw

to remove screw u needs first to remove barrel then remove screw on rail next to magazine and exactly under this screw u had screw in transfer port 

 

[aldea6]

That's it . When I get the gun , I sent a mail to the dealer and he explained me (with some pics ) how to remove that screw.