Winchester USA Ready 9mm Luger 124gr HP Handgun Ammo – 20 Rounds – Be ready when you need it most. USA Ready Defense is a select grade of personal defense ammunition offering the ideal combination of stopping power, penetration and reliable expansion. Hex-Vent Rigid Insert Shields Hollow Point From Obstruction While Channeling Material Flow For Positive Bullet Expansion Match Grade Primer Built To Exacting Specifications For Trusted Reliability