Update: Tacticup V2 is the correct size to fit cans and bottles. Enjoy. I also plan on modeling a carry handle for this as well. Now, not only can you can attach everything and the kitchen sink to your AR platform, but you can add every picatinny attachment to you Beer Coozie as well. ID is set to just over 2.5 inches to accommodate cans as well as domestic bottles. Update, the model is too small. I will update and repost files when I get them modeled