Mark, yes, the PX4 Storm in 45ACP has a "decocker". Specifications and features: - Beretta model Px4 Storm Type F semi-automatic handgun - .45 ACP - 4" barrel - 10 round capacity - Single/double action - Ambidextrous manual safety - Hammer decocking device - Firing pin block - Locked breech - Rotating barrel system - Interchangeable back straps - Superluminova 3-dot sights - Technopolymer reinforced fiberglass frame - Matte black, no glare finish - Front and rear slide serrations - Reversible magazine release button - 7.7" overall length - 5.5" tall - 1.4" grip width - 5.9" sight radius - 28.2 oz empty.

Mark the px4 has a decocker Beretta model Px4 Storm Type F semi-automatic handgun - .45 ACP - 4" barrel - 10 round capacity - Single/double action - Ambidextrous manual safety - Hammer decocking device - Firing pin block - Locked breech - Rotating barrel system - Interchangeable back straps - Superluminova 3-dot sights - Technopolymer reinforced fiberglass frame - Matte black, no glare finish - Front and rear slide serrations - Reversible magazine release button - 7.7" overall length - 5.5" tall - 1.4" grip width - 5.9" sight radius - 28.2 oz empty

Yes it does have a decocker

It has a decocker and here is a good review on it guns.com/review/gun-review-the-beretta-px4-storm-sd-45-acp-video/