(Re)Introducing the Bernard® S-Gun™ Semi-Automatic Air-Cooled MIG Gun
The Bernard® S-Gun™ is back—with refreshed configurations and enhanced flexibility—making it better suited than ever for demanding, hard-to-feed welding applications. While our steel monocoil cable isn’t new, its thoughtful updates make a noticeable difference in performance and reliability.
Why Choose the S-Gun? It Starts with the Cable
The S-Gun sets itself apart with a steel monocoil cable delivers superior structural integrity. This design offers excellent pinch resistance, helping maintain consistent gas flow and reliable wire feedability—even in tough conditions.
This makes the S-Gun ideal for applications that require longer cable lengths frequently looped or routed around tight corners. The result? Fewer pinch-related issues and a smoother welding experience.
Easy Configuration with Our Online Tool
Building an S-Gun to fit your needs is simple:
- Start with your amperage and cable length
- Select your preferred handle, neck, consumables, and power pin
- Generate a customized parts list—delivered right to your or your customer’s inbox
Visit our online configurator. In just a few clicks, you’ll have a tailored MIG gun solution that’s ready for your job. It’s fast, convenient, and eliminates the guesswork.
What’s New in the S-Gun Lineup?
To ensure we continue offering the best tools for the job, we’ve updated the S-Gun lineup with additional configurations and more options:
Model Options
- S250 (NEW)
- S350
- S450
Available in 15 ft., 20 ft., or 25 ft. cable lengths
Handle Choices
- Straight T-Series: Standard or locking trigger
- Curved Compact O-Series: Standard trigger only
Consumables
- AccuLock™ S system
- Choose Front Load or Rear Load liner styles
Power Pin Compatibility
- Miller®
- Tweco® #4 (with Lincoln® lead)
- Lincoln®
- Euro-style
These changes allow for more tailored configurations to meet specific application needs while streamlining ordering and setup.
Questions? We’re Here to Help
If you have any questions about the S-Gun or would like help configuring the right setup, our Customer Service team is ready to assist.
- Call us at 855-MIGWELD (644-9353)
- Or email cs@itwmig.com
DISCONTINUED PRODUCT | Clean Air™ Fume Extraction MIG Guns — 300 Amp, 400 Amp Models
DISCONTINUED PRODUCT | Clean Air™ Fume Extraction MIG Guns — 300 Amp, 400 Amp Models
Following the successful launch of Bernard’s Clean Air E™ fume extraction MIG gun on March 20, 2025, Bernard will discontinue its Clean Air fume extraction MIG guns in 300-amp and 400-amp configurations, effective September 30, 2025.
Examples of impacted configurations include:
CL30XXXXXXXX
CL40XXXXXXXX
Customers using these models are encouraged to transition to the next-generation Clean Air E fume extraction MIG gun. Clean Air E is an upgrade in performance. Designed for enhanced comfort, durability, and reduced welder fatigue, Clean Air E delivers efficient extraction with up to 95% fume capture with improved weld visibility while still enduring in the toughest welding environments.
If you have any questions, please contact Customer Service by phone 855.MIGWLED (644.9353) or by email cs@itwmig.com.
DISCONTINUED PRODUCT | 1780086, Semi-Automatic Air-Cooled Handle Kit
DISCONTINUED PRODUCT | 1780086, Semi-Automatic Air-Cooled Handle Kit
Effective August 22, 2025, Bernard will discontinue handle kit 1780086. Handle kit 1880198 can be ordered as a direct replacement, which includes handle halves, screws and posts. This handle also requires a spring strain relief, part number 2520042, to be installed at the base of the handle, enclosed between the handle halves.
Handle kit 1780086 was originally used as the large B Series handle (yellow trigger) for our 400amp semi-automatic air-cooled MIG gun but has not been the factory installed handle since 2014. This handle style does not accept a spring strain relief. Rather, the inner halves contained a molded “rib”, shown below, to close around the cable jacket and prevent debris from entering the handle through the bottom. The spring strain relief required for replacement handle kit 1880198 serves this function.
PRODUCT UPDATE | New Power Pin Option for IronPro™ Series FCAW Guns
PRODUCT UPDATE | New Power Pin Option for IronPro™ Series FCAW Guns
We have expanded the power pin options available for our IronPro™ Series FCAW Guns. Power pin 2200363 (pictured below) is specifically designed for use in self-shielded flux-cored applications on a wide range of Lincoln® LN-25® feeder models.
You may order the following IronPro 350 FCAW Guns with this power pin:
| 10 ft. | 15 ft. |
|---|---|
| GL3510MLNZ | GL3515MLNZ |
| GL3510MSXZ | GL3515MSXZ |
If you have any questions, please call or email our Customer Service team at 855.644.9353 (MIGWELD) or cs@itwmig.com.
PRODUCT UPDATE: S-Gun™ Simplification – Discontinued Configuration Selections
PRODUCT UPDATE: S-Gun™ Simplification – Discontinued Configuration Selections
Continuing the simplification efforts for our S-Gun™ Semi-Automatic Air-Cooled MIG Guns, effective June 27, 2025, all S-Guns in 500 amp, 600amp or 10’ configurations in any amperage will be discontinued.
Examples of configurations that will be discontinued:
- S50XXXXXXXX
- S60XXXXXXXX
- SXX10XXXXXX
For 500 amp or 600 amp S-Guns that are no longer available, we suggest ordering a similar configuration from our BTB Semi-Automatic Air-Cooled MIG Guns.
- S50XXXXXXXX, suggested replacement will be Q50XXXXXXXX
- S60XXXXXXXX, suggested replacement will be Q60XXXXXXXX
For 10’ S-Gun MIG Guns, a similar S-Gun configuration can be ordered in a 15’ length. Or, a BTB configuration in 10’ in the same amperage.
- SXX10XXXXXX, suggested replacement will be SXX15XXXXXX
- SXX10XXXXXX, suggested replacement will be QXX10XXXXXX
If you have any questions, please contact Customer Service by phone 855.MIGWLED (644.9353) or by email cs@itwmig.com.
PRODUCT UPDATE — Configurator Simplification, BTB Semi-Automatic MIG Gun
PRODUCT UPDATE – Configurator Simplification,
BTB Semi-Automatic MIG Gun
Effective April 22, 2025, we have simplified our BTB MIG Gun configurator selections. Check out your Best of The Best MIG Gun options below:
- Cable: Available in 200, 300, 400, 500 or 600 amps from 10, 15, 20 to 25 ft (no changes)
- Handles: Chose from B Series (small, large), O Series (small), or T Series (small, large)
- Consumables: Configurable with AccuLock™ S for Front Load or Rear Load liners, or Centerfire™ with Rear Load liners
- Power Pin: Available options include Miller®, Lincoln®, Euro Or Tweco® #4
BTB MIG Gun configurations that include options not listed above will still remain available for purchase. Our Reverse Lookup tool can help provide a parts breakdown for ordering information.
If you have any questions or would like more information, please contact Customer Service by phone at 1.855.MIGWELD (644.9353) or email at cs@itwmig.com.
PACKAGING UPDATE — New Bernard® BTB and TGX™ MIG Gun Boxes
PACKAGING UPDATE — New Bernard® BTB and TGX™ MIG Gun Boxes
Our Bernard® BTB and TGX™ MIG Gun boxes are undergoing a packaging change with a fresh new look. While the exterior is changing, the MIG guns inside remain the same — delivering the trusted performance and reliability you depend on. Please be advised you may notice both old and new packaging during the rollout as this change will happen gradually.
PRODUCT UPDATE — Configurator Simplification: S-GUN™ Semi-Automatic MIG Gun Changes
PRODUCT UPDATE — Configurator Simplification: S-GUN™
Semi-Automatic MIG Gun Changes
Effective August 2024, we will simplify the configurable options of our S-Gun™ Semi-Automatic Air-Cooled MIG guns. The simplification plan includes the following:
- Cable options: Only available for 300 and 400 amps in lengths of 15 ft., 20 ft. and 25 ft.
- Handle options: Configurable with either T-Series handle (standard, locking triggers) or O-Series (standard trigger).
- Consumables: Configurable exclusively with AccuLock™ S; however, will remain compatible with entire consumable line-up to accommodate user preference.
- Power Pins: Offered with Miller®, Tweco® 4 (with Miller® lead), Euro or Lincoln® power pins.
The S-Gun™ options will be removed from the BTB Semi-Automatic Air-Cooled MIG guns online configurator. We will create a dedicated product page for S-Guns™ on our website, which will also include a separate spec sheet.
In November, we will introduce an online configurator for S-Guns™.
The options removed from the configurator will remain available for purchase until the end of 2024. After this period, these options will be re-evaluated for potential discontinuation.
These changes aim to provide a more efficient and user-friendly experience for customers.
If you have any questions or would like more information, please contact your local ITW representative.
S-Gun™ Semi-Automatic MIG Gun Timeline of Changes
Product Update: Jump Liner No Longer Included with BTB MIG Gun
Product Update: Jump Liner No Longer Included with BTB MIG Gun
As of April 29th, if choosing a rotatable neck option for your BTB gun, they will no longer include a jump liner in the box.
If you still require and wish to purchase a replacement jump liner, they are provided based on wire size and the part number information can be found at the link below.
For questions or more information, please contact your local ITW sales representative.
PRODUCT UPDATE — Material Improvement for Clean-Air® Fume Extraction MIG Gun Replaceable Hose Cover
PRODUCT UPDATE — Material Improvement for Clean-Air® Fume Extraction MIG Gun Replaceable Hose Cover
You may have noticed a material improvement of the cable cover installed on all Bernard® Clean-Air™ fume extraction MIG guns. The new cable cover is more lightweight than the previous cover and allows greater flexibility of the hose assembly. Our replaceable cable cover hose protects from the damage that might be incurred on a hot workpiece, as well as extending the life of the hose for the Clean-Air fume MIG gun assembly.
For questions or more information, contact your local ITW sales representative.
PRODUCT UPDATE – Fume Extraction Neck Assembly Part Number Changes
PRODUCT UPDATE – Fume Extraction Neck Assembly Part Number Changes
Effective immediately, to simplify the ordering process on Bernard® Clean-Air® fume exhaust MIG guns, we have replaced the two parts needed to complete the complete the body assembly and vacuum tube assembly into one fume extraction neck assembly part number as shown in the chart below:
| Description | Fume Extraction Neck Assembly New Part Numbers | Discontinued Vacuum Tube Part Numbers and Body Assembly Part Numbers |
| 45° neck, medium — handle option T | 2390047 | 2390027 + 1040082 |
| 60° neck, medium — handle option T | 2390048 | 2390028 + 1040083 |
| 45° neck, medium — handle option N | 2390049 | 2390029 + 1040084 |
| 60° neck, medium — handle option N | 2390050 | 2390030 + 1040085 |
For questions or more information, contact your local ITW Representative
PRODUCT UPDATE — NEW ADDITION TO THE BERNARD FCAW SELF SHIELDED GUN PRODUCT OFFERING
PRODUCT UPDATE — NEW ADDITION TO THE BERNARD FCAW SELF-SHIELDED GUN PRODUCT OFFERING
We are proud to announce that effective immediately, a new 450-amp self-shielded FCAW series has been added to the Bernard self-shielded FCAW gun portfolio. The new IronPro™ self-shielded FCAW gun is ergonomically designed to provide excellent access and maneuverability in hard-to-reach weld joints and is ideal for rough use in harsh environments. The IronPro self-shielded FCAW guns also feature AccuLock™ S consumables to keep you welding in tight positions longer, with less contact tip changes and less troubleshooting.
Features and Benefits:
- Features AccuLock™ S consumables
- Choose from two neck sizes for different lengths and bend radii.
- Short handle better accommodates maneuverability for improved joint access.
- Sealed trigger keeps the trigger area slag and spatter free, reducing maintenance.
DISCONTINUED PRODUCT – TGX Series MIG Gun Amperages
DISCONTINUED PRODUCT – TGX Series MIG Gun Amperages
To continue delivering sustainable value to our customers, we regularly assess our product offering to ensure focus on customer needs and opportunities to innovate our product portfolio. Accordingly, as of March 1, 2024, we have discontinued the XS300, XL300 and XL400 amp TGX air-cooled MIG guns. We are recommending our 200-amp Bernard BTB MIG guns to replace XS300, XL300 and 300-amp Bernard BTB Mig guns to replace XL400 amp TGX air-cooled MIG guns.
NOTE: We will continue to support all XS180 and XS260 TGX air-cooled MIG guns.
PRODUCT UPDATE — Change on Neck Body for all T and C Series Handle Configurations on Bernard BTB MIG Guns
PRODUCT UPDATE — Change on Neck Body for all T and C Series Handle Configurations on Bernard® BTB MIG Guns
Effective immediately, you will notice two differences on the neck body for all Bernard BTB MIG Guns with a T and C series handle configuration.
- The color of the neck body is changing from silver to black.
- Screw holes for the T and C series handle configuration have been added to the neck body.
This will be a running change as we deplete the current inventory of the old-style neck body. If you have questions, please contact your local ITW representative.
BERNARD MIG GUN BUILD CHANGE — EFFECTIVE APRIL 11, 2023
Beginning April 11, 2023 Bernard has begun re-installing consumables back onto all BTB semi-automatic MIG guns so that your MIG gun arrives ready to weld. Note that guns built before April 11, 2023 will not have the consumables installed out-of-the-box and the nozzle and tip will be within a bag inside of the box. This update applies to all MIG guns, including all Miller packages that have part numbers beginning in 951.
PRODUCT CHANGE — CONE NUT AND END FITTING
PRODUCT CHANGE — CONE NUT AND END FITTING ON BERNARD® BTB MIG STRAIGHT HANDLE MIG GUNS WITH HYTREL® POLYMER CABLE — EFFECTIVE JANUARY 3, 2023
Our product offering is regularly assessed to ensure focus on customer needs and opportunities to innovate our product portfolio, so we can continue to deliver sustainable value to our customers.
Starting 1/3/2023, there will be part number changes to the cone nut/end fitting found on Bernard BTB straight handle MIG guns with Hytrel polymer cable. Note that although the parts will look different, the functionality remains the same. These part number changes are also reflected in the current BTB MIG Gun Owners Manual.
| Current Part Number | New Part Number | Type |
| 308 | 1680087 | End Fitting |
| 408T | 1680088 | End Fitting |
| 409 | 1540003 | Cone Nut |
| 509 | 1540004 | Cone Nut |
| 608-1 | 1680089 | End Fitting |
| 609 | 1540004 | Cone Nut |
Should you have any questions or need further assistance, please contact your local ITW representative.
BERNARD DISCONTINUED PRODUCT — EFFECTIVE AUGUST 1, 2022
BERNARD DISCONTINUED PRODUCT — EFFECTIVE AUGUST 1, 2022
August 1, 2022
Bernard has discontinued the sales of the Q150 semi-automatic air cooled MIG guns as of August 1, 2022.
Click here for a list of discontinued part numbers.
Replacement MIG gun options would be a configured Bernard® BTB 200 amp or TGX 180 amp MIG gun.
If you have any questions regarding this change, contact your local ITW representative.
BERNARD MIG GUN BUILD CHANGE — EFFECTIVE AUGUST 1, 2022
BERNARD MIG GUN BUILD CHANGE — EFFECTIVE AUGUST 1, 2022
July 26, 2022
In an effort to speed assembly time, we will stop installing the contact tip and nozzle on all MIG guns. Diffuser and liner will be installed.
- Contact tip and nozzle will be packaged separately in a bag and shipped in the box with all Bernard® MIG guns
- Refer to the Owner’s Manual provided in the MIG gun box for consumable installation instructions or visit our support page to locate your specific gun Owner’s Manual
Should you have any questions or need further assistance, please contact your local ITW representative.
DISCONTINUED PRODUCTS — Various Part Numbers
DISCONTINUED PRODUCTS — Various Part Numbers
October 23, 2020
Effective December 31, 2020, we will be discontinuing a variety of part numbers due to low demand and sales volume. A majority of these items are configured MIG gun part numbers and special products.
Please refer to the appendix for the list of affected part numbers.
PACKAGING CHANGE — Formatting Changes to Owner’s Manuals
PACKAGING CHANGES —
Formatting Changes to Owner’s Manuals
August 18, 2020
Customers may notice that some Tregaskiss® and Bernard® MIG welding product owner’s manuals look different than previous versions. This is because we recently refreshed the design and format of these product manuals, but their contents remain the same. No changes to the important installation, maintenance, troubleshooting, parts lists and other information and instructions have been made.
Bernard Owner’s Manuals
Tregaskiss Owner’s Manuals
The most current version of these newly formatted owner’s manuals, along with other product manuals and spec sheets, are available for download from our website from the respective product pages as well as the Spec Sheets and Owner’s Manuals page.
Printed inventory will be replaced as a running change.
DISCONTINUED PRODUCT – BTB MIG Gun 500 amp B Series Handle Option
DISCONTINUED PRODUCT –
BTB MIG Gun 500 amp B Series Handle Option
August 1, 2019
To continue delivering sustainable value to our customers, we regularly assess our product offering to ensure focus and opportunities to innovate our product portfolio. Accordingly, due to low demand, we are discontinuing the 500 amp B Series Handle option from our BTB MIG gun offering.
Effective August 16, 2019, the following part numbers will no longer be available:
- 4422B (trigger kit)
- 4522 (trigger kit, locking)
- 4408 (handle kit)
Please note that a comparable replacement is the O Series Handle option, which is also configurable in our BTB MIG gun product line.
Learn more about Bernard® BTB MIG guns and available options, or configure a BTB MIG gun.
January 8, 2019 Our product offering is regularly assessed to ensure focus on customer needs and opportunities to innovate our product portfolio, so we can continue to deliver sustainable value to our customers. Accordingly, due to low demand, the following products will be discontinued: Effective January 8, 2019, all legacy F-Gun MIG gun part numbers and all F-Gun series service parts will be discontinued and no longer available for sale. The following 600 amp Bernard® BTB semi-automatic air-cooled MIG gun models (with T series straight handles and locking triggers) are recommended replacement options:
March 9, 2018 We are proud to announce that effective immediately, you will notice some important changes to the Bernard® fume extraction MIG gun offering. Bernard FILTAIR™ fume extraction MIG guns are transitioning under the Clean Air™ brand name and will become our Bernard® Clean Air™ curved handle series fume extraction MIG guns. This product transition offers improved functionality, performance and ease of maintenance. Learn more about Bernard Clean Air fume extraction MIG guns or click here to configure your gun online.
November 30, 2017 Effective immediately, all 8- and 12-foot length options in the BTB semi-automatic air-cooled MIG gun product lineup will be discontinued. BTB MIG guns will continue to be available in lengths of 10-, 15-, 20- and 25-feet. No other configurable options have been affected by this change. View available options or configure a BTB MIG gun today!
DISCONTINUED PRODUCT – Legacy F-Gun MIG Guns and Service Parts
DISCONTINUED PRODUCTS –
Legacy F-Gun MIG GunsLegacy F-Gun™ MIG Guns
Affected Part Numbers
Part Number Description 4610 F-Gun MIG Gun, 10 ft 4615 F-Gun MIG Gun, 15 ft 4610E F-Gun MIG Gun, 10 ft, Euro 4615E F-Gun MIG Gun, 15 ft, Euro 4610M F-Gun MIG Gun, 10 ft, Miller® 4615M F-Gun MIG Gun, 15 ft, Miller 4610L F-Gun MIG Gun, 10 ft, Lincoln® 4615L F-Gun MIG Gun, 15 ft, Lincoln 4610T F-Gun MIG Gun, 10 ft, Tweco® 4615T F-Gun MIG Gun, 15 ft, Tweco 408 Handle, F-Gun Series 4627 Neck, F-Gun Series 429 Trigger, F-Gun Series
Replacement Options
Legacy F-Gun MIG Gun Part Number Replacement BTB MIG Gun Part Number 4610 Q6010NU3LBC 4615 Q6015NU3LBC 4610M Q6010NU3LMC 4615M Q6015NU3LMC 4610L Q6010NU3LLC 4615L Q6015NU3LLC 4610T Q6010NU3LTC 4615T Q6015NU3LTC PRODUCT UPDATE – Changes to the Bernard Fume Extraction MIG Gun Offering
PRODUCT UPDATE –
Changes to the Bernard Fume Extraction MIG Gun Product OfferingFeatures and Benefits:
Additional Changes:
DISCONTINUED PRODUCT – 8 and 12 foot BTB MIG Gun Lengths
DISCONTINUED –
8′ and 12′ BTB MIG Gun Lengths
