Angstadt Arms Ultra Light 15-inch AR-15 M-LOK Handguard Black Anodized Aluminum. Handguard does not require timing and installs with a standard wrench. mounting interface on 3 6 and 9 O'clock positions. Specifications for Angstadt Arms Ultra Light 15-inch AR-15 M-LOK Handguard: Manufacturer: Angstadt Arms Color: Black Finish: Anodized Fabric/Material: Aluminum Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Handguard Length: 15 in Handguard Type: Free-Float Gun Rail: M-LOK Weight: 9.4 oz Mount Type: Picatinny Attachment Type: Picatinny Features of Angstadt Arms Ultra Light 15-inch AR-15 M-LOK Handguard Modern free float design with M-LOK mounting interface on the 3 6 9 and 12 O'clock positions Top mil-spec 1913 picatinny rail with lightening cut 4 QD swivel mounting points Engraved Angstadt Arms logo Compatible with both forged and billet upper receivers Compatible with both .223/5.56 and 9mm Handguard does not require timing and installs with a standard wrench. Mil-Spec hard coat black anodize finish ID: 1.375 The last 3/4in of the handguard is bored out to 1.405in allowing most aftermarket sound suppressors 1.39in in diameter and smaller to tuck inside of the handguard 3/4in Compatible with all AR calibers except .308 Package Contents: Angstadt Arms Ultra Light 15-inch AR-15 M-LOK Handguard Hardware Angstadt Arms AA015HGMLT: Ultra Light 15-inch AR-15 M-LOK Handguard Black Anodized Aluminum