Snap On part Stock#: MHG5B Aluminum Welding Spool Gun for MM140SL / MM250SL / MM350XL welders. I bought the spoolgun when I got the welder but have never used it and don't have a need for it. I also have a full tank of argon I've been told it will fit other welders by changing the electical plug???? Snap On price is $1,320.90 and the argon and tank are valued at about $225.oo. Location: Kalispell it's NOT ok to contact this poster with services or other commercial interests montana