Article snapshot taken from Wikipedia with creative commons attribution-sharealike license.
Give it a read and then ask your questions in the chat.
We can research this topic together.
<!--READ FIRST: This section is for cited entries only. Please do not add entries into this list without a citation from a reliable source. All entries without a citation will be removed. Thank you.-->
<!--READ FIRST: This section is for cited entries only. Please do not add entries into this list without a citation from a reliable source. All entries without a citation will be removed. Thank you.-->
==Criminal use==
A Walther P22 was one of the weapons used in the 2007 ].<ref name=Williams>{{cite web |first1=Reed |last1=Williams |first2=Shawna |last2=Morrison |title=Police: No motive found |url=http://www.roanoke.com/vtshootingaccounts/wb/114655 |archive-url=https://archive.is/20120207181056/http://www.roanoke.com/vtshootingaccounts/wb/114655 |dead-url=yes |archive-date=February 7, 2012 |work=The Roanoke Times |date=April 26, 2007}}</ref>
The P22 may be fired double action at about 11 pounds of force, and operates as a single action with slightly more than 4 pounds of force. The P22 operates by blowback where pressure generated by a firing cartridge is countered by a combination of the inertial weight of the slide assembly and the force of the recoil spring. The action will not open until the projectile has left the barrel and the pressures have dropped to safe levels. The gun will not cycle efficiently unless high velocity .22 rounds are used.
