The Lincoln Electric Magnum PRO 250LX GT Spool Gun (K3569-2) is a 25 ft aluminum wire spool gun engineered for use with Lincoln Electric Power MIG and Flex Feed welders that feature a factory GT (Gun Trigger) connector. Rated for professional-duty aluminum welding, it eliminates soft-wire feed problems at the source by housing the wire spool directly at the gun head.
| Model | Magnum PRO 250LX GT Spool Gun |
|---|---|
| Part Number | K3569-2 |
| Amperage Rating | Contact us — consult the K3569-2 specification sheet for duty-cycle rated amperage |
| Cable Length | 25 ft (7.6 m) |
| Wire Diameter Range | 0.030 in – 3/64 in (0.8 – 1.2 mm) aluminum; contact us for additional wire types |
| Wire Capacity | 1 lb (4 in) small spools |
| Compatibility | Lincoln Electric Power MIG and Flex Feed welders with GT gun connector |
| Connector Type | GT (Gun Trigger) — Lincoln proprietary |
| Vendor | Lincoln Electric |
- Aluminum structural fabrication: The Magnum PRO 250LX GT spool gun keeps aluminum wire travel to just a few inches, preventing the deformation and bird-nesting that make pushing aluminum through a standard MIG gun liner unreliable at production speed.
- Soft-alloy welding on Lincoln GT-equipped machines: Shops that already own Lincoln Power MIG or Flex Feed welders with the GT connector can add aluminum capability with a direct-fit spool gun — no adapter cable needed.
- Marine and trailer manufacturing: The 25 ft cable lets operators work around large aluminum hull sections or trailer frames without repositioning the welder between joints.
- Production environments demanding consistent feed: The spool-at-gun design produces arc starts that are repeatable weld-to-weld, reducing downtime from wire jams and re-strikes.
The K3569-2 uses Lincoln Electric’s GT (Gun Trigger) connector — a proprietary interface found on select Lincoln Electric Power MIG and Flex Feed models. This connection carries both welding power and the gun trigger signal over a single cable, simplifying setup.
To confirm whether your Lincoln welder has a GT port, check the front panel or gun receptacle on your machine. If your Lincoln welder uses a standard euro-style or pin connector, the standard K3570-2 (non-GT) model may be the correct choice instead — see that product listing or contact us.
Explore all Lincoln and non-Lincoln spool guns in our Spool Guns collection.
WeldingMart is an authorized Lincoln Electric distributor. Every Magnum PRO 250LX GT Spool Gun (K3569-2) we sell is a genuine Lincoln Electric product, eligible for the full manufacturer warranty. Our team is trained on the complete Lincoln spool gun line and can verify GT vs. non-GT compatibility for your specific machine — just contact us before you order. We ship from US stock and back every sale with expert support.