Description This complete upper includes our ATLAS S-ONE Handguard! The S-ONE line of handguards are designed with size and weight in mind, providing the perfect addition to your lightweight build. Our proprietary ATLAS attachment system is a durable and dependable mounting platform, maintaining a slim profile while still providing the strength and stability customers have grown to love from Aero Precision handguards. INCLUDES: M5 (.308) Threaded Assembled Upper Receiver 15″ M-LOK ATLAS S-ONE Handguard 22″ 6.5 Creedmoor Fluted Stainless Steel Barrel, Rifle Length Low Profile Gas Block and Rifle Length Gas Tube .308 A2 Birdcage Flash Hider Product comes assembled This complete upper does not include BCG or Charging Handle. These products may be selected as add-ons under the FINISH YOUR BUILD tab M5 ASSEMBLED UPPER RECEIVER FEATURES: Forged from 7075 T6 aluminum M4 Feedramps .2795 takedown pin holes Laser engraved T-marks DPMS High Profile (.210) Tang) Includes port door and forward assist ATLAS S-ONE HANDGUARD FEATURES: Front and rear picatinny rail Eliminated center of top rail for weight reduction Indexing grooves in 12:00 position for positive grip control Quick disconnect sling socket at the 3, 6 and 9 o’clock positions Compatible with low profile gas blocks 1.3” Inside diameter 1.5” Outside diameter Compatible with mil-spec AR15 upper receivers and barrels Learn More about our NEW ATLAS S-ONE Hanguards 22″ 6.5 CREEDMOOR FLUTED STAINLESS STEEL BARREL, RIFLE LENGTH FEATURES: 6.5 Creedmoor 22″ Barrel, 1/8 twist, 416R Stainless Steel, gas port drilled .936 gas block journal Rifle length gas system M4 Feed Ramp Extension HP and MPI tested Standard .308 A2 flash hider Specifications: Made In America? Yes FFL SOT Shipping Required No Platform M5 Series ATLAS Caliber 6.5 Creedmoor Barrel Length 22″ Additional information Weight 108 oz Dimensions 34 × 5 × 5 in MPN APAR538105M70 UPC 840014613267