Description
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The Ruger 90366 is a factory OEM 7-round magazine for the Ruger SR1911 Commander Model chambered in 45 ACP, featuring stainless steel body construction with hybrid feed lips and a polymer base plate for reliable feeding and durability. This magazine is engineered to Ruger’s exact specifications for guaranteed fit and function in SR1911 pistols, making it the ideal replacement or spare magazine for shooters who demand factory reliability.
Key Features
Caliber: 45 ACP
Capacity: 7 rounds
Material: Stainless steel body construction
Follower: Steel follower
Spring: Steel wire spring
Base plate: Polymer construction
Finish: Natural stainless steel
Feed lips: Hybrid design for improved reliability
Compatibility: Ruger SR1911 Commander Model
Model number: 90366
Manufacturer: Ruger
Special Features
Factory Ruger magazine manufactured to strict specifications and tolerances to ensure perfect fit and function
Hybrid feed lip design combines the best attributes of traditional 1911 magazine geometry with modern improvements for enhanced feeding reliability
Stainless steel body construction provides corrosion resistance and dimensional stability throughout the magazine’s service life
Steel follower and spring system ensures consistent feeding pressure and reliable cartridge presentation to the breech face
Polymer base plate reduces weight while providing impact resistance and protection for the magazine spring
Non-tilt follower design maintains proper cartridge angle during feeding for improved reliability with various ammunition types
Made in USA with quality control standards matching Ruger firearm production
Practical Benefits
Factory OEM magazine eliminates fitment issues and feeding problems common with aftermarket alternatives
7-round capacity is optimized for Commander-length 1911 pistols with 4.25 inch barrels
Stainless steel construction resists rust and corrosion when carried in humid environments or exposed to perspiration
Hybrid feed lips improve reliability with hollow point defensive ammunition and various bullet profiles
Steel internal components provide long service life even with frequent loading and unloading cycles
Natural stainless finish is easy to identify among mixed magazine collections
Non-tilt follower reduces magazine-related malfunctions during critical defensive situations
Compatible specifically with SR1911 Commander models, ensuring proper magazine length and follower position
Polymer base plate allows the magazine to be dropped on hard surfaces without damage to internal components
Factory specifications guarantee consistent performance across multiple magazines
Ideal as a spare or replacement magazine for competition, defensive carry, or range training
Note: This magazine is not compatible with Ruger SR1911 Officer-style models due to different magazine length requirements
The Ruger 90366 SR1911 magazine is a reliable pick for SR1911 Commander owners who want factory-engineered performance, stainless steel durability, and hybrid feed lip technology for consistent feeding with their 45 ACP pistol.


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