Python Push Pull gun
Python gooseneck gun for high performance and power…
Python gun Water and Air Cooled models: 15 ft, 25 ft, 35 ft and 50 ft lengths. Unique set of features with time proven design to bring together the most advanced welding gun available.
Description
Python Welding Gun from MK Products
MK Python guns with advanced Gooseneck available in 15′,25′,35′ and 50′ lengths.
When you combine power, performance, and reliability, you get the Python Push Pull Gun. Recognized throughout the industry as the most advanced aluminum push-pull gun available, the MK Python Push Pull Gun continues its tradition with unparalleled performance. Time tested rugged design developed to withstand the rigors of industrial production and provide
hours of smooth wire feeding operation. When it comes to aluminum welding, the Python® is your answer.
Compatible guns used with Lincoln Power Feed 25M (model K2536-4) require a kit for adaptability. Direct plug-in connectors available for Lincoln, Miller and Fronius wire feeders.
Part Numbers MK | Part Numbers Lincoln 7 Pin | Part Numbers Miller 10 Pin | Part Numbers Fronius 9 Pin |
15ft AC: 234-815 25ft AC: 234-825 35ft AC: 234-835 50ft AC: 234-850 15ft WC: 235-815 25ft WC: 235-825 35ft WC: 235-835 50ft WC: 235-850 | 232-815 232-825 232-835 232-850 293-815 293-825 293-835 293-850 | 291-815 291-825 291-835 291-850 292-815 292-825 292-835 292-150 | 289-815 289-825 289-835 289-850 290-815 290-825 290-835 290-150 |
Features on MK Python MIG Gun
- Convenient “forward trigger” location
- Fingertip wire speed adjustment
- EZ-Lock® barrel can easily rotate 360˚ to provide the perfect angle for all jobs
- Available in both Water and Air Cooled models
- Provides hours of high speed continuous wire feed without welder fatigue
- For aluminum, stainless, steel and flux cored wires
- Wire feed speed 800 IPM
- Wire Type and Diameter
- Solid and Hard wire .030” – .045” (0.8 mm – 1.1 mm)
- Aluminum and Cored wire: .030” – 1/16” (0.8 mm – 1.6 mm)
- Snake Skin (Standard) (15, 25, 35, and 50 ft)
- Rated Output determined by the gun having an Air Cooled (A/C) or Water Cooled (W/C) barrel.
Python A/C is 225 Amps, Python W/C is 400 Amps
Please see the Push Pull guns we offer
CONTACT TIPS – ALUMINUM, Enhance Your Aluminum Capabilities
3/8” DIAMETER CONTACT TIPS

Python® LX, Python®, Prince® XL, Cobra® MX (Max cup), CobraMAX
Tip Dia | Wire Size | Tip ID | Arc | Tip Length | Quantity | Part Number |
3/8″ | .030” (0.8 mm) | .041” (1 mm) | Spray | 1.57” (39.9 mm) | 25 | 621-0390-25 |
3/8″ | .035” (0.9 mm) | .044” (1.1 mm) | Spray | 1.57” (39.9 mm) | 25 | 621-0391-25 |
3/8″ | 3/64” (1.2 mm) | .053” (1.37 mm) | Spray | 1.57” (39.9 mm) | 25 | 621-0392-25 |
3/8″ | 3/64” (1.2 mm) | .060” (1.5 mm) | Spray | 1.57” (39.9 mm) | 25 | 621-0393-25 |
3/8″ | 1/16” (1.6 mm) | .074” (1.9 mm) | Spray | 1.57” (39.9 mm) | 25 | 621-0394-25 |
3/8″ | 1/16” (1.6 mm) | .085” (2.16 mm) | Spray | 1.57” (39.9 mm) | 25 | 621-0395-25 |
1/4” DIAMETER CONTACT TIPS

Sidewinder®, Prince® SG, Cobra® SX, Cobra® MX (Classic cup)
Tip Dia | Wire Size | Tip ID | Arc | Tip Length | Quantity | Part Number |
1/4″ | .023” (0.6 mm) | .031” (0.8 mm | Spray | 1.50” (38.1 mm) | 25 | 621-0057-25 |
1/4″ | .030” (0.8 mm) | .036” (1 mm) | Spray | 1.50” (38.1 mm) | 25 | 621-0325-25 |
1/4″ | .030/.035” (0.8/0.9 mm) | .041” (1.0 mm) | Spray | 1.50” (38.1 mm) | 25 | 621-0076-25 |
1/4″ | .035” (0.9 mm) | .044” (1.1 mm) | Spray | 1.50” (38.1 mm) | 25 | 621-0001-25 |
1/4″ | 3/64” (1.2 mm) | .053” (1.37 mm) | Spray | 1.50” (38.1 mm) | 25 | 621-0327-25 |
1/4″ | 3/64” (1.2 mm) | .060” (1.5 mm) | Spray | 1.50” (38.1 mm) | 25 | 621-0003-25 |
1/4″ | 1/16” (1.6 mm) | .074” (1.9 mm) | Spray | 1.50” (38.1 mm) | 25 | 621-0075-25 |
1/4″ | 1/16” (1.6 mm) | .085” (2.1 mm) | Spray | 1.50” (38.1 mm) | 25 | 621-0153-25 |
3/8” DIAMETER – FLEX BARREL TIPS

Recommended for Flex Barrel, used with flex bareel cups 621-0465 and 621-0466
Tip Dia | Wire Size | Tip ID | Arc | Tip Length | Quantity | Part Number |
3/8″ | .030” (0.8 mm) | .041” (1 mm) | Spray | 1.0” (25.4 mm) | 25 | 621-0480-25 |
3/8″ | .035” (0.9 mm) | .044” (1.1 mm) | Spray | 1.0” (25.4 mm) | 25 | 621-0481-25 |
3/8″ | .040” (1 mm) | .053” (1.35 mm) | Spray | 1.0” (25.4 mm) | 25 | 621-0482-25 |
3/8″ | 3/64” (1.2 mm) | .060” (1.5 mm) | Spray | 1.0” (25.4 mm) | 25 | 621-0483-25 |
3/8” DIAMETER – SPRING LOADED CONTACT TIPS

Python® LX, Python®, Prince® XL, Cobra® MX (Max cup), CobraMAX™
MK’s line of spring loaded contact tips offers superior smooth arc control, and greatly reduces tip burn back issues while striking an arc or running longer continuous welds.
Tip Dia | Wire Size | Tip ID | Arc | Tip Length | Quantity | Part Number |
3/8″ | .030” (0.8 mm) | .041” (1 mm) | Spray | 1.57” (39.9 mm) | each | 621-0331 |
3/8″ | .035” (0.9 mm) | .044” (1.1 mm) | Spray | 1.57” (39.9 mm) | each | 621-0332 |
3/8″ | 3/64” (1.2 mm) | .053” (1.3 mm) | Spray | 1.57” (39.9 mm) | each | 621-0333 |
3/8″ | 3/64” (1.2 mm) | .060” (1.5 mm) | Spray | 1.57” (39.9 mm) | each | 621-0334 |
3/8″ | 1/16” (1.6 mm) | .074” (1.9 mm) | Spray | 1.57” (39.9 mm) | each | 621-0335 |
Connectivity Guide – Cups and Tips: Here. Catalog Page – Aluminum: Here.
GAS CUPS/NOZZLES
Gas Cups/Nozzles for MK Products Push-Pull Welding Guns/Torches
GAS CUPS – FINNED, HEAVY DUTY
Python®, Python LX, Prince® XL
Finned, Heavy Duty Cup | Cup Number | ID | Part Number | Compatible Guns |
![]() | 6 | 3/8” (9.5 mm) | 621-0248 | Python® and Python LX Air Cooled, Python and Python LX Air/Water Cooled. Prince® XL Air Cooled, Prince XL Air/Water Cooled |
8 | 1/2” (12.7 mm) | 621-0249 | ||
10 | 5/8” (15.9 mm) | 621-0250 | ||
10 HD | 5/8” (15.9 mm) | 621-0251 | ||
12 HD | 3/4” (19.05 mm) | 621-0252 |
GAS CUPS – FLEX BARREL
Python, Python LX, Prince XL & Prince XL Spool Gun
Flex Barrel Cup | Cup Number | ID | Part Number | Compatible Guns |
![]() | 8 | 1/2” (12.7 mm) | 621-0465 | Python, Python LX, Prince XL, & Prince XL Spool Gun |
10 | 5/8” (15.9 mm) | 621-0466 |
GAS CUPS – MAX
Cobra® MX (263, 267), CobraMAX™
MAX Cup | Cup Number | ID | Part Number | Compatible Guns |
![]() | 6 | 3/8” (9.5 mm) | 621-0420 | Cobra® MX (263, 267), CobraMAX™ |
8 | 1/2” (12.7 mm) | 621-0421 | ||
10 | 5/8” (15.9 mm) | 621-0422 |
GAS CUPS – CLASSIC
Cobra® MX (262, 266), Cobra® SX, Prince® SG
Classic Cup | Cup Number | ID | Part Number | Compatible Guns |
![]() | 6 | 3/8” (9.5 mm) | 001-0137-4* | Cobra MX – Classic, (262, 266) Cobra SX, Prince SG |
8 | 1/2” (12.7 mm) | 001-0138-4* | * Sold in quantities of 4 | |
10 | 5/8” (15.9 mm) | 001-0139-4* | * Sold in quantities of 4 |
GAS CUPS – QUICK
Sidewinder®
Quick Cup | Cup Number | ID | Part Number | Compatible Guns |
![]() | 6 | 3/8” (9.5 mm) | 621-0440 | Sidewinder® |
7 | 7/16” (11.1 mm) | 621-0441 | ||
8 | 1/2” (12.7 mm) | 621-0442 | ||
10 | 5/8” (15.9 mm) | 621-0443 |
GAS CUPS – WATER COOLED CUPS
400A Water Cooled Cup – Python, Python LX, Prince® XL
Water Cooled Cup 400A | Cup Number | ID | Part Number | Description |
![]() | 10 | 5/8” (15.9 mm) | 621-0065 | Fully Water Cooled 400A. Retaining nut 431-0977 comes with the barrel. Assembled with barrel below |
300A Water Cooled Cup Assembly – Python, Python LX, Prince XL
Water Cooled Cup 300A Assembly | Cup Number | ID | Part Number | Description |
![]() | Individual parts listed below | Individual parts listed below | Individual parts listed below | Partially Water Cooled 300A Assembled with barrel below |
300A Water Cooled Cup Parts – Python, Python LX, Prince XL
Gas Cup 300A | Cup Number | ID | Part Number | Description |
![]() | 6 | 3/8” (9.5 mm) | 621-0170 | Gas Cup* 300A *Must use Water Cooled cup adapter and chrome nut, P/N 621-0101 & 449-0193 – see below |
8 | 1/2” (12.7 mm) | 621-0159 | Gas Cup* 300A | |
10 | 5/8” (15.9 mm) | 621-0160 | Gas Cup* 300A |
WC Cup Adapter & Chrome Nut | Cup Number | ID | Part Number | Description |
![]() | 300A | WC Cup Adapter | 621-0101 | WC Cup Adapter – Use with 300A Cup |
![]() | 300A | Chrome Nut | 449-0193 | Chrome Nut – Use with 300A Cup |
Assembled Water Cooled Cups with Barrels
Barrel with 400A Water Cooled Cup Assembly | Barrel with 300A Water Cooled Cup Assembly |
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For more information refer to Connectivity Guide- Cups and Tips: Here.