Mag Well and Main Spring Housing for Rock Island Double Stack

[Buddy10mm]

I hope you're surviving the quarantine!  As an introvert, I have to say, it's a little bit of paradise for me! More excuses to go to the desert and go shooting!

I'm the happy owner of a Rock Island Double Stack 10mm.  16 rounds of 10mm is a blast!
However (there's always a 'however')... I don't want the flared competition magwell that's on the pistol.  For my carry purposes, it serves no purpose.  Is it a pin-on like a Dawson?  Can I simply remove it and replace the grips with longer ones, or do I need to get a new main spring housing too?  For that matter - last question - does a standard MSH fit the double stack RIA 1911, or is there a special one for the double stack? Inquiring Minds Want to Know!
And trigger fingers want to shoot! 

[sqlbullet]

This thread will be of great interest to you:

http://10mm-firearms.com/10mm-semi-auto-handguns/rock-ultra-fs-hc-10mm-inbound/

TL,DR;

It is similar to the Dawson magwell.  The MSH and Magwell are separate.  The magwell is retained by the MSH pin.

But, the frame in front of the MSH is relieved between .250 and .375".  This allows a standard full size MSH to be used, but reduces the OAL with the magwell attached.  As I document in the thread above, I didn't want the magwell, and planned to just remove it.  When I did I found the unsightly gap.

My solution was to take a grinder, then files, then sandpaper to the magwell and blend it.

[Buddy10mm]

Hey thanks!  I did a search before I posted but somehow missed your thread.  I'll blame it on the "inter webs".
Yours is the same issue as mine!  I may end up following a similar path. 

[sqlbullet]

Good luck.  If you are new to metal work, go fast enough to not be frustrated at how long it takes, but slow enough you don't take anything off you will want back.  That goes for your body as well as the gun. 

I experimented with a 3D printed version, and got something that was very close.  But, PLA and ABS are nowhere near strong enough.  Glass filled nylon maybe.  If you have a really good friend with a CNC mill, they may be able to take my stl file and do something with it in low carbon or stainless.  I have attached the STL file, but can also generate a OBJ or SVG if needed.

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[Buddy10mm]

Thanks!  Once I learn how to be a 2nd Grade teacher AND run my own classes online, I'll start working on my magwell modification.