Angstadt Arms Handguard .223/5.56 9mm 5.5in Ultra Light Profile M-LOK Handguard Black. Compatible with .223/5.56 and 9mm calibers. Specifications for Angstadt Arms Ultra Light Handguard: Manufacturer: Angstadt Arms Color: Black Finish: Black Gun Make: AR Platform Gun Model: AR-15 Gun Type: Rifle Handguard Length: 5.5 in Handguard Type: Free-Float Gun Rail: Picatinny Weight: 5.3 oz Condition: New Additional Features: Mid-light and M-LOK Handguard Included Accessories: Hardware Mount Type: M-LOK Quantity: 1 Package Contents: Angstadt Arms Ultra Light Handguard Angstadt Arms AA055HGMLT: Handguard .223/5.56 9mm 5.5in Ultra Light Profile M-LOK Handguard Black