Cody, yes, this comes with an ambidextrous slide mounted Safety/Decocker.

Yes it has a :
Ambidextrous Safety/Decock Lever see *****UPC:
082442819730
Description:
BTA PX4 STORM SUB 9MM PST 13RD
Brand:
Beretta
Model:
PX4 Storm Sub-Compact
Type:
Pistol: Semi-Auto
Caliber:
9MM
Finish:
Bruniton (Matte Black)
Action:
Double Action
Stock:
Black Polymer with Interchangeable Backstraps
Sight:
Fixed 3-Dot
Barrel Length:
3
Overall Length:
6.2
Weight:
26.1 oz
Capacity:
13+1
# of Mags:
2 (1 Standard, 1 SnapGrip)
**********Safety:
Ambidextrous Safety/Decock Lever
Receiver:
Polymer Frame
Features:
Picatinny Accessory Rail;
Reversible Magazine Release, Drop-Free Magazines

no

Only the Type C model doesn't come with the Safety/Decocker. file:///C:/Users/Steve/Downloads/PistolBrochure_2011_V2.pdf

Hi Cody, Yes this model comes with the decocker. Featuring a 3-dot sight system, ambidextrous slide-mounted safety, automatic firing pin block, commander style hammer, drop free magazine, interchangeable backstraps, Picatinny rail, and reversible magazine release the PX4 is reliable, pleasant to shoot and easy to maintain making it the perfect sidearm for the 21st century and beyond.
-----Specification and Features:
9mm Luger caliber --
4" barrel length --
17 round drop free magazine --
Traditional Double/Single action--
Decocker --
3 Dot Fixed sights --
Polymer frame --
Polymer grip --
7.59" overall length --
5.51" tall --
1.42" wide --
1.18" grip width --
5.75" sight radius --
Matte black--
27.3 oz