Ruger-5.7 Magazine 20rd 5.7x28mm Black Oxide Steel - 90700

The Ruger 90700 magazine delivers reliable feeding for the Ruger-5.7 pistol with its precision-engineered 20-round capacity. This factory magazine ensures consistent performance with the high-velocity 5.7x28mm cartridge through advanced spring technology and steel construction.

What Makes This Different

Unlike aftermarket alternatives, this factory Ruger magazine features proprietary follower geometry specifically calibrated for the 5.7x28mm cartridge's unique dimensions. The black oxide steel construction provides superior corrosion resistance compared to standard blued finishes. Factory specifications ensure proper bolt hold-open function and seamless integration with the Ruger-5.7's magazine well tolerances.

Key Features

• 20-round capacity maximizes firepower while maintaining compact profile
• Black oxide steel body resists corrosion and wear from repeated use
• Factory-tuned spring tension optimized for 5.7x28mm ballistics
• Precision follower design prevents double-feeds and misfeeds
• Drop-free release ensures rapid reloads under stress
• Witness holes allow quick visual ammunition count verification
• Compatible exclusively with Ruger-5.7 pistol platform

Range testing demonstrates consistent feeding across various 5.7x28mm loadings, from 27-grain varmint rounds to 40-grain barrier-blind ammunition. The magazine maintains reliable function through temperature extremes and extended firing sessions. Competition shooters appreciate the extended capacity for stage planning, while duty users benefit from the reduced reload frequency during critical situations.

Technical Specs

• Capacity: 20 rounds of 5.7x28mm ammunition
• Construction: Black oxide treated steel body
• Spring: Heat-treated steel with anti-fatigue coating
• Follower: Glass-filled polymer with steel insert
• Overall Length: Approximately 5.8 inches
• Weight: 4.2 ounces empty
• Compatibility: Ruger-5.7 pistol only
• Manufacturer: Sturm, Ruger & Company, USA

Factory magazines eliminate compatibility guesswork while providing the reliability expected from Ruger's engineering standards. Professional users and civilian shooters alike depend on genuine Ruger components for consistent performance when reliability cannot be compromised.