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Discussion Starter #1
Need a little technical help here -

Does anyone know if the URBACH FLUTED AND PORTED FLASH HIDER FOR TITLE ONE EXTENSION HK51/53 from Gordon Miller of HKspecialist.net is threaded on one end or is it smooth all the way through.

If it is threaded is it 1/2 x 28 TPI?

What is the inside diameter of same?

Thanks in advance.
srt1112
 

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Need a little technical help here -

Does anyone know if the URBACH FLUTED AND PORTED FLASH HIDER FOR TITLE ONE EXTENSION HK51/53 from Gordon Miller of HKspecialist.net is threaded on one end or is it smooth all the way through.

If it is threaded is it 1/2 x 28 TPI?

What is the inside diameter of same?

Thanks in advance.
srt1112
It's threaded to fit the HK91 barrel threads. To make it technically Title 1 legal it must also be pinned in place, then have the pin hole welded over.
 

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Discussion Starter #4
hk91 urbach

What are the barrel threads on a 91.
For example an AR15 5.56 is cut to 1/2x28 tpi and the ar15 9mm is cut 1/2 x 36 tpi.
Any ideas for the 91?
 
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