The Promag Mag Ar15 5.56 Blk Roller Follower 40rd is a high-capacity magazine designed for AR-15 5.56mm rifles. Constructed from a proprietary DuPont Zytel based polymer, this magazine ensures durability and reliability. The patented anti-tilt roller follower and heat-treated chrome silicon wire spring enhance feeding performance and longevity.

This magazine is perfect for range use, competition, and training, providing a reliable and consistent feeding experience. Made in the USA, it reflects ProMag's commitment to quality and innovation in firearm accessories.

Key Features:

• Manufacturer: ProMag
• Model: PM RM40
• Capacity: 40 rounds
• Material: DuPont Zytel based polymer
• Follower: Anti-tilt roller
• Spring: Heat-treated chrome silicon wire