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Aero Precision offers the AR-15 ATLAS S-ONE M-LOK free-floating slim line handguards for lightweight MSR builds. These handguards are made from 6061-T6 aluminum and have a slim profile to reduce weight, but maintain strength and stability. The Aero Taper Lock Attachment System (ATLAS) uses two mirrored tapered locking nuts to evenly distribute clamping pressure across a custom barrel nut with a turnbuckle screw. These handguards come in lengths of 7" - 7.25", 9" - 9.19", 12" - 12.56", and 15" - 14.94" and are available in Black and FDE. They feature front and rear picatinny rails, indexing grooves in the 12 o'clock position for positive grip control, and have a 1.3" I.D. and a 1.5" O.D. Aero Precision includes all the required mounting hardware, and their rail lengths measure from the receiver's point of contact to the end of the last picatinny slot at the muzzle.