The Heckler & Koch P30S V3 is a 9mm semi-automatic pistol with a 3.85-inch barrel, DA/SA trigger, manual safety, and decocker. It ships with 17-round and 20-round magazines and includes a front night sight. The "S" designation indicates the addition of a manual safety lever over the standard P30 V3. 
 

Key Specifications 

• Brand: Heckler & Koch 
• Model: P30S V3 
• Caliber: 9mm 
• Action: Semi Auto 
• Barrel Length: 3.85 in 
• Color/Finish: Black 
   

Detailed Features 

• DA/SA trigger with manual safety and decocker 
• Ambidextrous controls 
• Ships with 17-round and 20-round magazines 
• Front night sight included 
• 3.85-inch barrel

Owners who specifically chose the P30S over the standard P30 V3 typically wanted the manual safety, often for holster or duty requirements. The ambidextrous safety and decocker arrangement gets positive feedback from southpaw shooters who appreciate controls that work equally well on both sides.

The DA/SA trigger on the P30S carries the same characteristics as the standard P30 V3, which means the learning curve discussion is the same: the trigger is smooth but requires practice to shoot the transition consistently. Those who do the work report high accuracy at practical ranges.

The P30S occupies a niche. Buyers who need a manual safety on a DA/SA pistol don't have many options in this class, which makes the P30S the default recommendation in that category. The premium price is accepted more readily here than on the standard V3 because the alternatives are fewer.