Strike Industries PMAG Gen M3 5 Round Extended Magazine Plate Black SI-EMP+5-BK. M.P) design provides smoother faster magazine reloading and handling. It provides multiple functions to include additional 5 round capacity. Specifications for Strike Industries PMAG Gen M3 5 Round Extended Magazine Plate: Manufacturer: Strike Industries Fabric/Material: Polymer Magazine Capacity: 5 Round Gun Model: M4 AR-15 Condition: New Features of Strike Industries PMAG Gen M3 5 Round Extended Magazine Plate Finger groove for enhanced grip and easy pull from magwell and pouch Impact resistant nylon reinforced polymer construction Adds 5 rounds to MAGPUL PMAGS (GEN M3 only) Easy to install and secure to magazine Ergonomic design provides smoother and faster reloads Package Contents: Strike Industries PMAG Gen M3 5 Round Extended Magazine Plate What firearm models does the manufacturer say Strike Industries PMAG Gen M3 5 Round Extended Magazine Plate is compatible with? The manufacturer says that Strike Industries PMAG Gen M3 5 Round Extended Magazine Plate is compatible with AR-15 M4Strike Industries SI-EMP+5-BK: PMAG Gen M3 5 Round Extended Magazine Plate Black SI-EMP+5-BK