Ruger MkIII 22/45 Magazine "Safety" Delete

I still haven't decided on a .22 handgun for a training tool in my new shooter classes (see "Let Me Take You Shooting" on the right side of the page). The Ruger MkIII 22/45 is a strong contender due to a reputation for quality, combined with a price point that might see me getting one this Buy-A-Gun Day. The only problem is that it comes with a lawyer key lock in the gun itself. I don't see lots of reports of these breaking, however, so it can't be THAT bad (unlike with Taurus revolvers rendering themselves inoperable)

Anyhow, one thing I can't stand in a semi-auto arm is a magazine disconnector "safety" that prevents firing the weapon without a magazine properly installed.

Fortunately for the tinkerer who realizes gun safety lies between the ears, there is a fix. Rip out the new "safety" parts and replace them with a bushing or washers to take their place.

The elegant way to do this is to replace the MkIII hammer bushing with a MkII hammer bushing.

There are also a couple of rimfire enthusiasts who produce a replacement bushing that will work.

The cheap/free method is to use washers in place of the removed "safety" pieces, to take up the empty room so everything will still work properly. I don't understand why you would use stainless or plain steel instead of brass washers for this, but I haven't been there or done that yet.

Of course, you will need to know how to detail strip the piece, so it is handy to have instructions with lots of pictures for that while you study up on the project.

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ETA:

It will also need a Loaded Chamber Indicator filler/replacement (also available premade if you want to pay for it).

And a blast shield is definitely in order as well.