ProMag AR-15 40rd .223/5.56 Hybrid Magazine

The ProMag AR-15 40-round Steel/Polymer Hybrid Magazine is a high-capacity centerfire magazine designed for use with AR-15/M16 pattern rifles. It supports .223 Rem / 5.56 NATO and is built with a heat-treated steel feed tower and a DuPont Zytel polymer body for a balance of durability and weight savings. The design includes a high-tensile chrome silicon wire spring and an injection-molded polymer follower to promote smooth feeding.

Key Specifications

• The capacity is 40 rounds.
• The cartridge compatibility is .223 Rem / 5.56 NATO.
• The feed tower is made from heat-treated, black oxide-finished steel for wear resistance.
• The body is constructed from a DuPont Zytel polymer for impact resistance and reduced weight.
• The spring is a high-tensile chrome silicon wire spring to support consistent pressure.
• The follower is an injection-molded polymer follower for reliable, jam-free operation.
• Compatibility extends to most Commercial-Spec and Mil-Spec AR-15 receivers.
• The magazine features a precision-machined magazine catch cutout for a snug, wobble-free fit.
• This item is 100% American-made and comes with a lifetime warranty.

The ProMag 40-round hybrid magazine delivers a practical combination of capacity and durable construction suitable for range work, training, competition, and general-purpose use. Its steel feed tower and polymer body provide long service life and dependable function under routine use, while the chrome silicon spring and polymer follower help ensure smooth feeding and reliable performance.