ID this barrel.

rcm192 · May 24, 2016

I scooped this up second hand. Its a G23/32 threaded barrel chambered for 357 Sig. Who makes this barrel? Im trying to figure out which thread pattern this is....Im thinking its the old school 9mm .5x36 pattern. My .5x28 thread protector stated to thread but stops after a quarter turn. The threads are also finer than the .5x28.

Heres pics:

JBP55 · May 24, 2016

Try a thread gage.

DBMJR1 · May 24, 2016

The ID of that barrel is ~.355". :silly:

rcm192 · May 24, 2016

DBMJR1 said:
The ID of that barrel is ~.355".

Haha yea youre right. I couldnt beat it for the price i paid.

- - - Updated - - -

JBP55 said:
Try a thread gage.

Ill have to dig some up. I think my smith has some somewhere at work.

rcm192 · May 26, 2016

So I put a thread gauge on the end of the barrel just now and the closest thread count that matched was 32 tooth....has anyone heard of a 32 tpi for .357 sig? Just seems to be oddball.

Blue Diamond · May 26, 2016

Did u try a metric thread gauge to see if maybe it was cut to met. specs.

Sulzer · May 26, 2016

I know some of the .357 Sig barrels come 13.5x1mm LH

Blue Diamond · May 26, 2016

Is the LH at the end Left Hand thread?

SulzerFirearms said:
I know some of the .357 Sig barrels come 13.5x1mm LH

noob · May 26, 2016

Looks like how my efk barrel looked.

rcm192 · May 27, 2016

Its is def a right hand thread. The closest metric was 0.8...not a close enough fit though. I guess I just need to try a .5x36 accessory.

- - - Updated - - -

noob said:
Looks like how my efk barrel looked.

I shall do some research. Thanks

Sulzer · May 27, 2016

Did you try a 36 TPI gauge? This should be really easy to figure out if you have a good set of fractional and metric thread pitch gauges.

US Infidel · May 27, 2016

I have some standard gauges I can bring by later if you don't already have a complete set. I couldn't find metric set. May be able to match it up at any hardware store??

This is all I have with me today.

rcm192 · May 27, 2016

US Infidel said:
I have some standard gauges I can bring by later if you don't already have a complete set. I couldn't find metric set. May be able to match it up at any hardware store??

This is all I have with me today.

That would be good. I left the barrel at home today. Ill have to keep it at the shop. Thanks!

Blue Diamond · May 27, 2016

I have gauges like above but the US Threads jump from 28 tpi to 40 tpi. My metrics cover that gap though.

rcm192 · May 31, 2016

So USInfidel dropped off his gauges. Its not 36tpi....its 32 for sure.....so a .5x32 threaded 357 sig barrel....who the hell made this thing!? Lol.

Blue Diamond · May 31, 2016

After some very fast research I found that .5x32 tpi is for a Factory HK MP5-N barrel if that helps u.

rcm192 said:
So USInfidel dropped off his gauges. Its not 36tpi....its 32 for sure.....so a .5x32 threaded 357 sig barrel....who the hell made this thing!? Lol.

rcm192 · Jun 1, 2016

Blue Diamond said:
After some very fast research I found that .5x32 tpi is for a Factory HK MP5-N barrel if that helps u.

I came across that too. I wonder if Silencerco will make me a custom piston? Lol. If not I may have to go to tros and get a thread adapter.

Blue Diamond · Jun 1, 2016

Are u sure it is a Glock barrel and not an HK? I'm not familiar with those at all.

rcm192 · Jun 1, 2016

Blue Diamond said:
Are u sure it is a Glock barrel and not an HK? I'm not familiar with those at all.

Its 100% a drop in glock barrel. Its a straight copy of a G32 barrel.

Blue Diamond · Jun 1, 2016

Just get your acc. that fit the HK MP5-N barrel and u should be GTG.

ID this barrel.

The Best online firearms community in Louisiana.

Member Benefits:

Sic semper tyrannis

La. CHP Instructor #409

Madame Mayor's Fiefdom

Sic semper tyrannis

Sic semper tyrannis

sportsman

Well-Known Member

sportsman

enthusiast

Sic semper tyrannis

Well-Known Member

TRUST NO ONE

Sic semper tyrannis

sportsman

Sic semper tyrannis

sportsman

Sic semper tyrannis

sportsman

Sic semper tyrannis

sportsman

Log in

Forum statistics