…A Glock frame across the house.
I can see the mag catch reversal being fine in a roomy double-stack grip. But it is a complete fiddly pain in the ass to pop the spring in the tight little G43 magwell.
The offending lefthand magcatch ledge has now been filed and sanded. Mags load without hangup at any angle. I can finally like the gun.
Not that I should have had to file a new in box Glock, however.