HRT Tactical Gear Modulus System Elastic Insert Single AR Black. This insert allows most AR/AK style magazines to be inserted along with other items such as radios. The inserts are elastic and if your magazine is similar in size to the ones pictured it will probably work. Holds 1 AR Style Magazine Holds other items such as radios Fits Open Top Modulus Pouch Elastic construction to fit most magazines NOTE: Only works with Modulus Placard System. Specifications for HRT Tactical Gear Modulus System Elastic Insert: Manufacturer: HRT Tactical Gear Color: Black Size: One Size Fabric/Material: Elastic Quantity: 1 Accessory Attachment System: Velcro Package Contents: HRT Tactical Gear Modulus System Elastic Insert HRT Tactical Gear HRT-MSELIN-AR-BK: Modulus System Elastic Insert Single AR Black