Where this fits: this is a season update, not the starting point. It is what we ran and adjusted that year, and it builds on the Gun T RPO Playbook instead of replacing it. The books run in order, 2.0 through 7.0. If you are starting from scratch, get the Gun T RPO Playbook first at fbcoachsimpson.com/downloads/guntplaybook and come back to this one.

Format: a printed book, shipped to you.

4.0 is the year the tight end became a real part of this offense. The additions were expanded tight end usage, a full set of new RPOs, and the Y and B Peek reads. Same offense underneath, with more answers for the looks that had been giving us trouble.

Everything in it comes with the install ladder, the teaching progression, the coaching points and the complete play design, so you can put a concept in on Tuesday instead of reading about it and hoping you got the idea right.

Who it is for: coaches already running the Gun T who want the version we ran that season, and coaches building the system who want the tight end material specifically.

What it is not: it is not a standalone system and it is not the current version. It builds on the Gun T RPO Playbook, and 5.0, 6.0 and 7.0 came after it.

What to do next

• Starting from scratch: Gun T RPO Playbook
• The year before this one: 3.0 Book
• The year after: Gun T System - 5.0 Book