ProMag RM40 AR-15 5.56 40-Round Magazine

The ProMag RM40 is a detachable 40-round magazine designed for AR-15 platforms using .223 Remington or 5.56 NATO ammunition. Its black polymer body incorporates an anti-tilt roller follower for smooth magazine operation. The magazine is made in the USA.

Key Specifications

• The magazine fits the AR-15 platform.
• It is intended for .223 Remington and 5.56 NATO ammunition.
• The magazine provides a 40-round capacity.
• The detachable design supports convenient magazine changes.
• The body is made from DuPont Zytel-based polymer.
• The follower features an anti-tilt roller design.
• The magazine has a black finish.
• The spring is formed from heat-treated chrome silicon wire.
• The country of origin is the United States.

With its high-capacity format, durable polymer construction, and roller follower design, the ProMag RM40 is a practical spare or replacement magazine for compatible AR-15 setups.