XTS Ambidextrous Extended Magazine Release AR-15 Red. Specifications for XTS Ambidextrous AR-15 Extended Magazine Release: Manufacturer: XTS Gun Make: AR Platform Gun Model: AR-15 Finish: Anodized Fabric/Material: Aluminum Gun Type: Rifle Weight: 0.4 oz Included Accessories: Standard Condition: New Hand: Ambidextrous Package Contents: XTS Ambidextrous AR-15 Extended Magazine Release Allen Key What firearm models does the manufacturer say XTS Ambidextrous AR-15 Extended Magazine Release is compatible with? The manufacturer suggests that XTS Ambidextrous AR-15 Extended Magazine Release is compatible with AR-15XTS XTS-MCA-RD: Ambidextrous Extended Magazine Release AR-15 Red