The UK's Finest Independent Forum for Shooters and Gun Owners. Est 2010.

Posted: **Sat May 27, 2017 12:26 pm**

Following on from post about what moderator to purchase I went to our local gunshop to have a look at them and a discussion. I thought the thread might be 1/2 unf but upon trying that adaptor and various others we couldn't find one that fitted.

Does anyone with a lantac 223 straightpull know what the thread is? The current muzzle 'device' I had as standard from Lantac was an a2 flashhider which when I googled the thread was 1/2 unf but I don't know whether Lantac use a different thread or their own design etc. Any help would be appreciated!

Posted: **Sat May 27, 2017 12:31 pm**

1/2" x 28 UNEF.
That's standard for any AR.

Posted: **Sat May 27, 2017 1:09 pm**

Thanks Bam Bam. Is that quite a fine thread?

Posted: **Sat May 27, 2017 1:39 pm**

JS569 wrote:Thanks Bam Bam. Is that quite a fine thread?

Yes, it's 28 threads per inch, hence 1/2" x 28 TPI UNEF. UK most common 1/2" x 20 is only 20 threads per inch(tpi).

Posted: **Mon May 29, 2017 2:56 pm**

In a ½" UN thread, 13tpi is coarse (UNC), 20tpi is fine (UNF) and 28 is extra fine (UNEF).

The UK's Finest Independent Forum for Shooters and Gun Owners. Est 2010.

Lantac 5.56/ 223 muzzle thread size for fitting a moderator

Lantac 5.56/ 223 muzzle thread size for fitting a moderator

Re: Lantac 5.56/ 223 muzzle thread size for fitting a modera

Re: Lantac 5.56/ 223 muzzle thread size for fitting a modera

Re: Lantac 5.56/ 223 muzzle thread size for fitting a modera

Re: Lantac 5.56/ 223 muzzle thread size for fitting a modera