First attempt at a 1 wide tileable redstone build!

I'm amazed how well I made this (for my level of redstone) You press the button and an iron block gets put above the obsidian and another one gets loaded in I made this for a server where I own a bank and players can request resources. I thought I could make a kinda fancy design rather than just a dispenser so this works amazing. The only problem is that it dosent work with redstone blocks so it isn't quite the best it could be