This is a Mec-Gar replacement/extra magazine for the Ruger Mark III and Mark IV. It features a heat treated housing and high-impact polymer or certified carbon steel follower and floorplate. The magazine spring is made of high strength type "D" music wire-the strongest wire available. TIG welding provides additional strength and a seamless finish. Each magazine surface is specially treated to ensure high corrosion resistance.

Caliber: .22 Long Rifle
Capacity: 10 Rounds
Body Material: Carbon Steel Tube (Heat Treated For Strength)
Spring Material: High Tensile Music Wire Spring
Follower Material: Polymer
Follower Color: Black
Polymer Baseplate
Finish: Blued

Fits: Ruger Mark III, IV