Promag Ruger Mini-14 Rifle Magazine .223 Cal 40/rd

Features:

• 40-round magazine
• Fits Ruger Mini-14 .223 cal / 5.56x45mm rifles
• Magazine body constructed of a proprietary DuPont Zytel based polymer and heat treated steel with black oxide finish.  Steel upper polymer lower housing
• Injection molded magazine follower
• Magazine spring formed from heat treated chrome silicone wire 
• Made in USA