Aggressive design, ultra light 15" free float skeletonized hand guard with lightening cuts. Handguard does not require timing and installs with a standard wrench. Features: Modern free float design with M-LOKA(R) mounting interface on the 3, 6, 9 & 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. Color: Choice of Mil-Spec hard coat black anodize finish, Magpul FDE (Flat Dark Earth) and Tactical Grey Cerakote Weight: 9.4 oz ID: 1.375* The last A 3/4" of the handguard is bored out to 1.405", allowing most aftermarket sound suppressors 1.39a ^2 in diameter and smaller to tuck inside of the handguard A 3/4" Length: 15" Includes hardware Compatible with all AR calibers except .308