Prodigy magwell question and working with MBX mags

[Nick_shoots_fast]

Hello, looking at the Dawson mag well for a prodigy and wondering if the MBX base pads will be an issue for 140mm mags. 
 

if it is, what other magwells work with the MBX base pads?

Edited August 10 by Nick_shoots_fast

[shred]

MBX 140mm mags there's tons of clearance.  126's can be the problem children.

(yes that's a converted Ice, not the Dawson Prodigy magwell, but there's clearance for days anyway)

 

[Nick_shoots_fast]

10 minutes ago, shred said:

On 140mm mags, no problem, there's tons of clearance.  It's the 126's to worry about.

(yes that's a converted Ice, not the Dawson Prodigy magwell, but there's clearance for days anyway)

 

I have an ice for a STI but didn’t know if the openings were the same.