Best self-defense against a knife:
Run.
You spelled Ultimax 100 Mk8 wrong!
OR
✅1. Heckler & Koch HK MR Assault Rifles
✅2. Springfield Saint Semi-Automatic Rifle
✅3. Steyr AUG A3 M1 Tactical Assault Rifle
✅4. Daniel Defense DDM4A1 Combat Rifle
✅5. IWI TAVOR 7 Assault Rifle
✅6. Ruger AR-556 MPR Rifle
✅7. Smith & Wesson M&P15 Competition Rifle
✅8. IWI Galil ACE Assault Rifle