The Walther Arms PDP Full Size is a 9mm Luger semi-automatic pistol with a 4.5-inch barrel and an optics-ready slide. It ships in a California-compliant configuration with a 10-round capacity. The frame is polymer with adjustable sights and a black finish. 
 

Key Specifications 

• Brand: Walther Arms 
• Model: PDP Full Size 
• Caliber: 9mm Luger 
• Action: Semi Auto 
• Capacity: 10+1 
• Barrel Length: 4.5 in 
• Color/Finish: Black 
   

Detailed Features 

• Full-size frame with 4.5-inch barrel 
• Optics-ready slide 
• Polymer grip frame 
• Adjustable sights 
• California-compliant 10-round capacity

Owners of the PDP Full Size tend to praise the ergonomics, particularly the grip texture, which Walther calls Performance Duty Polymer. Most find it one of the more comfortable striker-fired pistols to hold and shoot for extended sessions. The adjustable sights get positive marks for out-of-the-box usability before dropping in a red dot.

The optics-ready slide is appreciated, though buyers in California specifically note that the 10-round magazine limit is the main trade-off of this variant. Those outside CA-restricted states often prefer sourcing the standard-capacity version separately, since the platform itself is well-regarded and the limitation is regulatory rather than design-driven.

The PDP's trigger is a consistent positive for most owners, described as crisp with a clean reset. A smaller group finds the reset slightly longer than preferred. Overall build quality for a polymer-framed pistol at this price range draws few complaints, and Walther's warranty support is considered above average.