The Firing Line Forums

Go Back   The Firing Line Forums > Hogan's Alley > Handguns: General Handgun Forum

Reply
 
Thread Tools Search this Thread
Old May 26, 2020, 09:33 AM   #1
simonrichter
Senior Member
 
Join Date: December 3, 2011
Location: Austria
Posts: 654
flush threaded barrel

I need some help conderning the correct term for a semiauto pistol barrel that is flush with the slide frnt (like any other standard barrel), but has a thread for attaching a suppressor when some kind of a bridging device is used. I have seen that on some semiauto marketed only recently, but can't find it anymore and I'm lost which term to google...
__________________
"Get off of my lawn!" Walt Kowalski
. ISSC PAR .223
simonrichter is offline  
Old May 26, 2020, 10:08 AM   #2
stinkeypete
Senior Member
 
Join Date: July 22, 2010
Location: Madison, Wisconsin
Posts: 508
The barrel is threaded, but the the thread protector interfaces with the barrel bushing until a coupler replaces the thread protector? The coupler being female (threaded whatever the barrel is threaded) to male (whatever the suppressor is threaded)?

It’s an interesting idea to me because that would make the barrel to bushing fit easy to tighten up although the threading adds yet another tolerance to stack and part to shake loose.

For all the barrels I’ve seen threaded, I have yet to see a suppressed pistol at the range. I think it’s like putting a NOS sticker on your Toyota. Since I’m in a cranky mood, I will suggest that someone could make money by making a barrel bushing that has a fake .45 cal suppressor tacked on the end since 99.9 % of people will never get a can anyhow and 9mm would scoot right through.

I think the correct term is length of barrel and thread specifications. E.g., “5” .578x28 threaded barrel”

Last edited by stinkeypete; May 26, 2020 at 10:14 AM.
stinkeypete is offline  
Old May 26, 2020, 12:16 PM   #3
44 AMP
Staff
 
Join Date: March 11, 2006
Location: Upper US
Posts: 21,377
Quote:
I think the correct term is length of barrel and thread specifications. E.g., “5” .578x28 threaded barrel”
I believe this would be the correct way to do it. I do not know of any special term used for what you describe.

I would expect it to be "barrel (length), threaded (thread size), caliber...." and part number/stock number if it were on a parts list
__________________
All else being equal (and it almost never is) bigger bullets tend to work better.
44 AMP is offline  
Old May 26, 2020, 02:16 PM   #4
simonrichter
Senior Member
 
Join Date: December 3, 2011
Location: Austria
Posts: 654
thanks - so there is no particular term for this "barrel not protruding yet with a suppressor thread"...?
__________________
"Get off of my lawn!" Walt Kowalski
. ISSC PAR .223
simonrichter is offline  
Old May 28, 2020, 06:36 AM   #5
Adventurer 2
Senior Member
 
Join Date: September 5, 2006
Posts: 560
The S&W M&P compact 22LR is sold in that variant and also with the connector thingy - maybe search for videos on this model to see what it is called.
Adventurer 2 is offline  
Old May 28, 2020, 06:09 PM   #6
tipoc
Senior Member
 
Join Date: December 11, 2004
Location: Redwood City, Ca.
Posts: 4,008
Does anyone have a pic of how that would work?

Also what's the advantage if any?

tipoc
__________________
1. All guns are always loaded.
2. Never let the muzzle cover anything you are not willing to destroy.
3. Keep your finger off the trigger till you are ready to shoot.
4. Identify your target and know what is beyond it.
tipoc is offline  
Old May 29, 2020, 06:18 AM   #7
simonrichter
Senior Member
 
Join Date: December 3, 2011
Location: Austria
Posts: 654
James Bond-Gadget

Here you see what I mean: https://www.youtube.com/watch?v=7IdBe2G62yc
__________________
"Get off of my lawn!" Walt Kowalski
. ISSC PAR .223
simonrichter is offline  
Old May 29, 2020, 06:45 AM   #8
Adventurer 2
Senior Member
 
Join Date: September 5, 2006
Posts: 560
https://youtu.be/oEE4Ad2Q7d8

It costs less for the model that doesn’t include the adaptor. S&W built both models with a barrel that could use an adaptor (had I known I would have bought the lower cost model and added the suppressor adaptor later). PS my suppressor runs excellently on the M&P 22 w any ammo.

Last edited by Adventurer 2; May 29, 2020 at 06:51 AM.
Adventurer 2 is offline  
Old May 29, 2020, 09:20 AM   #9
HiBC
Senior Member
 
Join Date: November 13, 2006
Posts: 6,724
I'm confused. I don't understand .
I can comprehend a threaded barrel that extends beyond the slide to screw a suppressor onto.

Most semi-autos have some diameter at the front of the slide the barrel passes through. Example is a barrel bushing on a 1911.

With a 1911,it supports the barrel. On some guns,its just a clearance hole at the end of the slide. Are you looking for that hole to be big enough to accept a threaded sleeve protruding from the suppressor ? One that reaches through the end of the slide to thread onto a barrel with threads?

Hmmm.

I'd suggest getting a drop in extended threade barrel to install when you want to use your suppressor.

I wonder if you may have seen a video of someone changing a compensator on a 1911 race gun.

In that case,the barrel bushing is eliminated. The OD of the barrel is threaded to accept a tapered portion of the compensator that fits the open front of the slide. Those are typically a semi-permanent assembly,with loctite.

The comp is not conveniently removed,and the gun won't run without the comp in place.

Might you have mistaken a compensator for a suppressor?
HiBC is offline  
Old May 29, 2020, 01:38 PM   #10
stinkeypete
Senior Member
 
Join Date: July 22, 2010
Location: Madison, Wisconsin
Posts: 508
Here is my guess:
Imagine that the “lump” at the end of the 1911 was taken off with a lathe and the barrel threaded.
Next, a “thread protector” is made such that when installed it interacts with the bushing exactly as the lump at the end of the barrel.

Should one want the install a silencer, an extended thread suppressor is made to simulate a normal threaded barrel and the silencer is threaded on that.

I have not seen such a thing and my extreme prejudices are:
1. A manufacturer would only do this if it was somehow cheaper than a longer threaded barrel
Or
2. Such an arrangement allows a product to be sold over more markets without submitting multiple variations for review.

But mostly

Someone thinks they can make money through marketing or manufacture of an inferior method of solving a problem, with the understanding that practically none of the customers will in fact install a silencer despite their fantasy of one day doing so.

Some pistols don’t rely on a slide bushing to support the barrel end, in that case why not? Perhaps because the little thread protector protruding is a “status symbol” that persuades some to pay extra for a quarter inch extra of pipe, a bit of threading and a nut.

It’s doubtful that adjusting the bulb at the end of the barrel is a better way to get excellent fit rather than adjusting the bushing as no competitors do this but that’s not to say it may not be a breakthrough. I just don’t see that as a selling point.
stinkeypete is offline  
Old May 29, 2020, 04:01 PM   #11
HiBC
Senior Member
 
Join Date: November 13, 2006
Posts: 6,724
Hmmm.Most sidearms are built with some attention to saving a few ounces.

The barrels I'm used to have a relatively thin wall section.

Unless we want to go with a fat bull barrel,by the time we do this turning down and threading,the steel will be pretty thin.

Now it has to hold up the weight and leverage of a suppressor .

I may not understand quite what is being asked.

I could see something like threading the barrel for a bushingless comp cone,just instead of the comp would be a threaded barrel extension...but it seems a lot easier to buy a barrel set up for a suppressor.

Maybe the idea is to be able to carry a gun that,from a distance,does not look like a pistol you could screw a suppressor on.

I don't know. I'll step back
HiBC is offline  
Old May 29, 2020, 05:56 PM   #12
DaleA
Senior Member
 
Join Date: September 12, 2002
Location: Twin Cities, MN
Posts: 4,563
Thank you for asking your question HiBC. I didn't understand either. And maybe still don't.
DaleA is offline  
Old May 29, 2020, 09:06 PM   #13
Webleymkv
Senior Member
 
Join Date: July 20, 2005
Location: Indiana
Posts: 10,234
I think I understand what the OP is asking about. The barrel of the pistol is flush with the end of the slide but the end section is reduced in diameter and threaded. A thread protector with the same outside diameter as the rest of the barrel is used. When one wants to attach a suppressor or other muzzle device, a thread adapter is used which has threads extending past the end of the slide for the muzzle device to screw onto.

The whole point of this arrangement is to be able to use muzzle devices without the need for an extended barrel when muzzle devices are not in use. The current production Walther PPK/S in .22 LR uses such an arrangement. I suspect this is mainly practical on .22's as they often have relatively thick barrels and thus reducing the diameter of the end section still allows for adequate thickness.
__________________
Smith, and Wesson, and Me. -H. Callahan
Well waddaya know, one buwwet weft! -E. Fudd
All bad precedents begin as justifiable measures. -J. Caesar
Webleymkv is offline  
Old May 30, 2020, 12:29 AM   #14
stinkeypete
Senior Member
 
Join Date: July 22, 2010
Location: Madison, Wisconsin
Posts: 508
PPK is a blowback design with a fixed barrel. The slide does not even touch the barrel at the muzzle.

I reckon that people would pay EXTRA for the thread protector poking out. It shows how TactiCool they are. Like owning a Ferrari shirt. All you need to do is get around to buying that Ferrari. On the guy's to-do list.

a suppressed PPK would be interesting... but the sights are going to be a bit of an issue. I expect one gets a sight picture full of "can".
stinkeypete is offline  
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -5. The time now is 12:01 AM.


Powered by vBulletin® Version 3.8.7
Copyright ©2000 - 2020, vBulletin Solutions, Inc.
This site and contents, including all posts, Copyright © 1998-2018 S.W.A.T. Magazine
Copyright Complaints: Please direct DMCA Takedown Notices to the registered agent: thefiringline.com
Contact Us
Page generated in 0.06841 seconds with 10 queries