All that would need to be done is to take the existing grip safety, modify it without the "arm" that blocks the trigger bow and have it "fit (mate)" into the mainspring housing so it doesn't pivot. Same access and takedown as the traditional.
I'm sure there would be a better redesign, but that would take some thought and innovation on the 1911 manufacturers...need I say more.
Perfect modification on a series 80 since you have a firing pin block activated by the trigger and the grip safety serves no useful function anyway.
Can't do it on a Kimber or S&W because they foolishly use a grip activated firing pin block.
The smaller companies that actually produce non traditional 1911's like STI, SVI won't do it, I suspect, since they don't have a firing pin block in their models and no one is going to remove an existing "safety", useless or not, in this country. Besides, they know that a lot of people pin the grip safety anyway, so why assume the liability.
Even Para, with the LDA, a double action with a thumb safety
, still incorporated a "grip" safety.
So, I think it's a lost cause.
Mete: I would be interested in that dimension or part as long as it's not a shock buff that's cut to fit.