A step-by-step K guard and Matrix back-take roadmap that turns entries into reliable back exposure.
The Bottom Line
You learn a coherent K guard to Matrix system with clear decision points. It focuses on posture control, hook mechanics, and back exposure without gi grips. You will not get grip-based collar-sleeve chains.
⚡️ Quick facts
Best for: Guard players chasing backs
Skip if: You dislike inversions
Tech focus: K Guard, Matrix, Back Takes
Biggest takeaway: Back exposure from K guard
📋 Jump to a section (Click to expand)
What You'll Learn
Mikey ties together K guard entries with his Matrix back-take so you can attack the back without relying on grips. Eight volumes cover concepts, drills, entries, and contingencies.
It is system-first: posture control, leg pummeling choices, then structured pathways to babybolo, twister hooks, and climbs.
Primary Techniques You'll Drill
- K Guard
- Matrix
- Back Takes
- Babybolo
- Twister Hook
- Entries
- Leg Pummeling
- Off Balancing
Format & Level
- Instructional style: System Based, Conceptual, Drill Heavy
- Skill level: Intermediate
- Format: No-Gi
- Runtime: 4 hours and 55 minutes
- Volumes: 8
Should You Buy It?
Buy it now. I ranked this first because it teaches a repeatable back-take framework that works across body types without relying on gi grips.
Why Mikey Musumeci?
Mikey Musumeci is a multiple-time IBJJF black belt world champion and ONE flyweight submission grappling champion known for precise, system-based guard and leg attacks.
Community feedback
Here’s a summary of common feedback from platforms like Reddit’s r/bjj.
😍 Why People Love It
- Praised as a complete system thinker who explains why positions work, not just what to do.
- People value his contingency mapping when your first back-take fails.
- Seminar-goers highlight his clarity and enthusiasm translating well to video.
🤔 Common Criticisms
- Some users find his longer sets repetitive and wish for tighter editing.
- If you never play K guard, the depth may feel excessive.
- Eight volumes can be a heavy lift to study end-to-end.
Smart Alternatives
- The Berimbolo System Part 1: The Foundation – Classic bolo mechanics if you prefer traditional entries. (Price: $197.00, 8 vols)
- No Gi Berimbolo System Part 1 – Back-takes without the gi if grips are not your game. (Price: $197.00, 8 vols)
- Leg Pummeling Mastery – Sharpen the pummeling that underpins K guard entries. (Price: $197.00, 6 vols)
Sources & References
Official listing: View K Guard & Matrix System: Attacking The Legs From The Knees Part 1 on BJJ Fanatics
Additional References
Your next step
You have the breakdown, community feedback, and my final thoughts. Now it’s your move.

