This Complete Upper includes our Gen 2 Enhanced Handguard! Key features include the addition of quick disconnect sling sockets enhanced milling design for grip and visual appeal and a new profile for the picatinny top rail. – Includes: – M5E1 Enhanced Assembled Upper Receiver – 15 Enhanced M-LOK Handguard – 18 .308 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. – M5E1 Upper Features: – Forged from 7075 T6 aluminum – Precision machined to our specs – M4 feedramps – Laser engraved T-marks (Anodized only) – .2795 takedown pin holes – Accepts standard AR .308 components – Comes with forward assist and port door installed – Handguard mounting platform is forged into the receiver – Gen 2 Enhanced Handguard Features: – Added quick disconnect sling socket at the 3 6 and 9 o’clock positions – Milled additional surfaces along flats to aid with gripping and add visual appeal – New profile of the Picatinny Top Rail – 1pc free float design – Rail is Machined from 6061-T6 Aluminum – Built in Anti-Rotation tabs – Scalloped rails – Continuous top rail – 1.78 inside diameter fits most muzzle devices and 1.5 suppressors – Compatible with low profile gas blocks – 18 .308 Fluted Stainless Steel Barrel Rifle Length Features: – .308 Winchester 18 Barrel 1/10 twist 416R Stainless Steel gas port drilled – .750 gas block journal – Rifle length gas system – M4 Feed Ramp Extension – HP and MPI tested – Standard .308 A2 flash hider