Q LLC 6HBMLOKARHG Honey Badger Q Black 6061-T6 Aluminum This Is a Replacement For Your Honey Badger Handguard And it's Compatible With Any M4/AR Correct Upper Receiver. Inside Diameter 1.54" *Note- Barrel Nut, Hardware And tools Not Included. Firearm Type: AR/M4 Firearm Model: Q Honey Badger Material: 6061-T6 Aluminum Finish: Black