yes it is a striker fired gun with a 4.85 lb trigger pull The Walther PPQ Semi Automatic Rimfire Pistol is an excellent choice for small game varmint hunting, recreation, and competitive shooting. The Walther PPQ .22 Semi Automatic Rimfire Pistol is a well made pistol that is easy to shoot and handle making it also ideal for the introduction of new shooters to the sport. This is not your standard run of the mill Rimfire pistol - this is a modern pistol that will give you hours of enjoyment shooting the versatile and economical .22 Long Rifle Cartridge.
Specifications and Features:
Walther PPQ .22 5100300
Semi Automatic Rimfire Handgun
.22 Long Rifle
4" Barrel
12 Rounds
Striker fired, blowback action
Pre-cocked SAO trigger
4.85 lb. trigger pull
.16" trigger travel
Serrated trigger guard
Bottom Picatinny rail
Corrosion-resistant, Tenifer coated aluminum slide
Steel barrel with matte black finish
Low profile 3-dot polymer combat sights
Front and rear slide serrations
Ambidextrous slide stop and magazine release button
Two Safeties: Firing pin block and Trigger safety
Ergonomic, black polymer frame w/textured grip
Interchangeable backstrap
Height 5.3"
Width 1.3"
Weight 21 oz

Yes, it's "Striker Fired" same as the center fire pistols but blow back action. 4.85 lb. trigger pull with .4" trigger travel. waltherarms.com/handguns/ppq/ppq-22/#