Don't waste your money on the Dawson guide rod. You DO NOT NEED a tool to disassemble a gun with a full length guide rod.
Hold the gun in your right hand with your thumb under the beaver tail and your fingers over the top of the slide.
Push the slide back with your left hand until the take down notch lines up with the slide release/lock lever. Now hold the slide in that position with your right hand.
Push out the slide release / lock lever with your left hand.
Let the slide come forward with your left hand to its normal position, pull the slide forward off of the frame and wrap your left hand fingers around the under side of the slide as you pull it off to retain the recoil spring / guide rod and barrel in place.
The slide will now be off the gun with the barrel, recoil spring and guide rod contained in the slide.
Turn the slide so that the recoil spring / guide rod, and barrel are up facing you.
Lift the guide rod up and slide it out from inside the spring.
Pull the spring out of the gun.
Push the recoil guide cap out of the gun (push it toward the back of the slide or toward the barrel link - however you want to look at it).
Pull the barrel out of the front of the slide.
Reassemble the gun in the reverse order.
Put in the barrel.
Put in the recoil guide rod cap.
Put in the spring.
Put in the guide rod.
Wrap your left hand fingers around the slide and the spring / guide rod / barrel.
Put the slide on the frame and push it to the back of the frame and capture the slide with your right hand when the take down notch is aligned.
Put in the slide release / lock lever.
The gun's reassembled.
No tools, no special guide rods. I have three guns with full length guide rods and never use a tool to disassemble or reassemble a gun.