The Angstadt Arms AA055HGMLT stands out for its bold design and ultra light 5.5 free float hand guard. This product boasts a sleek and slim profile with a 1.375 ID, but still has the capacity to accommodate a sound suppressor up to 1.40 in diameter. This can be tucked inside the handguard when paired with a 6 barrel of the exact length.It works seamlessly with calibers 223/5.56 and 9mm. The handguard installation process is a breeze, requiring neither timing nor specialized tools, just a standard wrench will do. Please note that this handguard will not fit 308 models.