Originally Posted by Squawk
You shouldn't have to ever pull the trigger to disassemble a Glock. At least not any straight from the factory.
The glock slide only has to be pulled back a couple centimeters to engage the slide release. You should be able to pull the slide back this amount using one hand. Then the other hand pulls down the slide release.
This is easy math. I usually attempt to refrain from this, BUT,
THANKS FOR LETTING US KNOW HOW OUR GUNS WORK THERE FELLA
He was trying the trigger after Installing the part, racked the slide, now the trigger has engaged the sear and must be depressed for disassembly.
Also, the slide really only needs to move 5/16-3/8"(Merrica) rearward for the takedown lever to be actuated.