Dawson Precision Presents: The IPSC Legal 1911 Magwell! Developed For IPSC Classic Division, 34.9mm wide,These low profile magwells are machined out of solid aircraft aluminum, and come with a aircraft aluminum mainspring housing. There is no Ice Insert in this Magwell, it does have very large opening to help with fast reloads. Works with standard base pads that fit IPSC Classic Division Box. Not intended to be used with Dawson No-Gap Base pads. Dave's advice, "ALWAYS MEASURE PARTS THAT HAVE TO MEET RULES FOR THAT CLASS BEFORE GOING TO THE COMPETITION".