Pro Mag Industries Ruger Mini-14 Extended Magazine 5.56 / .223 Rem 40-Rounds

ProMag Magazine Features This magazine is specifically designed to fit the Ruger Mini-14 ensuring perfect compatibility and reliable operation. It features a unique construction with a steel upper and a polymer lower housing. The steel components are heat-treated and finished with a black oxide coating for enhanced durability and corrosion resistance while the lower housing is made from a proprietary DuPont Zytel based polymer known for its high strength and resilience. The magazine s performance is bolstered by an injection-molded follower and a spring formed from heat-treated chrome silicone wire which together provide smooth feeding and consistent reliability. This design helps to prevent jams and ensures a steady flow of rounds into the rifle. ProMag Magazine Specifications Brand: ProMag Type: Magazine Caliber: .223 Remington / 5.56 NATO Capacity: 40 Rounds Fits: Ruger Mini-14 Material: Steel/Polymer Construction: Steel Upper Polymer Lower Housing Follower: Injection Molded Spring: Heat Treated Chrome Silicone Wire Color: Black Made in: U.S.A.