Evolution Gun Works High Quality Retainer Housing Pin Set 11 Pieces Blue. This Pistol Parts from the great people at Evolution Gun Works is made from drill rod a much stronger material than leaded steel. When gunsmithing you never know when a pin will go missing. Don't settle for cheap crap. The Evolution Gun Works High Quality Retainer Housing Pin Set is made to the GI 1911 print specifications with tighter tolerances. This 11 piece pin set is manufactured to the GI 1911 print specifications with tighter tolerances. For a great way to make sure you are working with some of the best pins the industry has to offer choose the Evolution Gun Works High Quality Retainer Housing Pin Set. Specifications for Evolution Gun Works High Quality Retainer Housing Pin Set: Manufacturer: Evolution Gun Works Gun Make: 1911 Platform Gun Model: 1911 Additional Features: 11 Pieces Condition: New Package Contents: Evolution Gun Works High Quality Retainer Housing Pin Set What firearm models does the manufacturer say Evolution Gun Works High Quality Retainer Housing Pin Set is compatible with? The manufacturer says that Evolution Gun Works High Quality Retainer Housing Pin Set is compatible with 1911Evolution Gun Works 10030: High Quality 11-pc Pin Set Blue