ProMag RUGA28 Ruger 10/22 55rd 22 LR Drum Magazine

This ProMag RUGA28 is a 55-round drum magazine designed for .22 LR rimfire use and listed as compatible with Ruger 10/22 and Charger platforms. The body is described as polycarbonate with an injection-molded follower and is noted as made in the USA. The manufacturer data includes state-specific sales/shipping restrictions; review those restrictions before purchase.

Key Specifications

• Holds 55 rounds of .22 LR ammunition.
• Chambering listed as .22 LR (22 Long Rifle) for rimfire platforms.
• Magazine body constructed of polycarbonate.
• Designed to fit Ruger 10/22 and Charger rimfire platforms.
• Configured as a drum magazine for extended capacity.
• Features an injection-molded follower for reliable feeding.
• Exterior dimensions listed as 3.05 x 7.80 x 13.40 (as provided by manufacturer).
• Manufacturer states the product is made in the USA.
• Includes a precision-wound magazine spring (manufacturer description).

The RUGA28 offers a high-capacity, factory-backed magazine option for owners of compatible Ruger rimfire rifles. Its polycarbonate construction and injection-molded follower are intended to provide durable, consistent feeding for range use and high-volume rimfire practice. For shooters who prioritize extended capacity and a compact drum form factor, this magazine presents a practical spare or replacement that integrates with Ruger 10/22 family platforms.