Ruger SR1911® Competition 9mm — Factory 10-Round Stainless Steel Magazine (Model 90666 / UPC 736676906666)
Upgrade your Ruger SR1911® Competition with a genuine factory magazine engineered for flawless feeding, dependable function, and competition-ready durability. The Ruger SR1911 Competition 10-round stainless steel magazine (Model 90666) is the OEM replacement magazine designed specifically for the 9mm SR1911 Competition series — built to Ruger’s tolerances so it drops in, feeds smoothly, and keeps you shooting with confidence. ruger.com+1
Key Features — What Makes this Magazine a Must-Have
Factory OEM fit for Ruger SR1911 Competition (9mm) — Designed to the same specifications as the magazines shipped with the Competition model for perfect fit and reliable function. OpticsPlanet+1
10-round capacity (9mm Luger) — Complies with applicable capacity limits while giving you competitive capacity for range, training, and local matches. OpticsPlanet
Durable stainless steel construction — Laser-welded stainless body provides strength, corrosion resistance, and a clean natural finish that complements the pistol’s stainless or two-tone styling. Omaha Outdoors+1
High-tensile steel spring & stainless follower — Engineered for smooth feeding and long service life under high-round count use. GunMag Warehouse
Numbered witness holes — Quickly verify round count at a glance — practical for competition staging and range routines. GunMag Warehouse
True OEM part number & UPC — Model 90666, UPC 736676906666 — buy with confidence knowing you’re getting a genuine Ruger magazine. Omaha Outdoors+1
Performance & Reliability
This Ruger factory magazine is made to perform under the same demanding conditions as the SR1911 Competition pistol itself. The stainless shell resists dings and corrosion, the spring and follower deliver consistent, positive feeding, and the precise dimensional tolerances minimize wobble in the grip — all of which help reduce malfunctions and keep your trigger time productive. Owners and armorers favor genuine OEM magazines when reliability and fit are critical. eBay+1
Design Details & Practical Benefits
Natural / brushed stainless finish that resists finish wear and blends with stainless slides. cheaperthandirt.com
Compact, competition-minded capacity that balances local restrictions with match performance. Sportsman's Warehouse
Smooth follower geometry for gentle cartridge presentation to the feed ramp, helping extend the life of both ammunition and firearm. GunMag Warehouse
Who Should Buy This
Owners of the Ruger SR1911 Competition (9mm) who want a direct-fit, factory replacement or spare magazine. ruger.com
Competitive shooters and range regulars who need reliable, durable magazines that withstand heavy use. American Handgunner
Collectors and enthusiasts who prefer OEM components to maintain authenticity and resale value. OpticsPlanet
Compatibility & Part Info
Quick Buying Tips
Always verify your pistol model before purchasing replacement magazines — Ruger makes several SR1911 configurations and magazine compatibility can vary by model and caliber. When possible, choose genuine OEM magazines (like Model 90666) for the best assurance of fit, finish, and feeding reliability. ruger.com+1
Whether you’re stocking spare magazines for competition, training, or personal carry (where legal), the Ruger SR1911 Competition 10-round stainless magazine (90666 / UPC 736676906666) delivers the OEM quality, durability, and feeding performance SR1911 owners expect. Fit, feed, and shoot with confidence. OpticsPlanet+1
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