Promag Oem, Pro Rm40 Mag Ar15 5.56 Roller 40rd Folwr

This replacement or spare magazine is compatible with your ar-15.It is constructed of dupont zytel polymer with an anti-tilt roller follower and mag spring formed from chrome silicone wire.Made in the usa.

Caliber: 5.56x45mm NATO
Capacity: 40rd
Finish: Black
Model: OEM
Material: DuPont Zytel Polymer
Type: Detachable
Model Fit: AR-15
Brand Fit: AR-15 Platform
Capacity: 40