This is a Walther 1911 known as the 1911 chambered in 22 LR, model 517030410.
The Colt Government 1911 A1 is the classic configuration of the legendary Colt 1911 handgun carried by U. S. troops in several wars. The Colt Government 1911 A1 Semi-Automatic Pistol in . 22 L. R. is manufactured exclusively by Walther under license from Colt. It is the only genuine Colt tactical rimfire replica available in the world.
Features:
Fully Functioning Thumb and Grip Safeties
Rubber Grips
Blowback Operated
1911-Style Field Stripping