What causes light primer strikes

Black Rifle Arms Enhanced Power Hammer Spring, Enhanced Hammer Spring, Hammer spring

GunMag101: Primer Light Strikes - The Mag Life

Hornady 53gn .223 Superformance Light Primer Strike Issue - Bullets, Cartridges and Reloading - Pigeon Watch Forums

Consistent Light Primer Strikes

PPSH slightly mushroomed firing pin. Is this what causes light primer strikes for me every 10 rounds or so? : r/guns

GunMag101: Primer Light Strikes - The Mag Life

GunMag101: Primer Light Strikes - The Mag Life

9mm issues

Light primer strikes??

Kimber Micro 9- Weird Primer Strikes - Workbench - Full30

Heavy primer strikes > broken firing pin