M5 18" .308 SS Fluted Barrel Complete Upper Receiver w/ 15" M-LOK Handguard

$719.99 - $744.99
In stock

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.


  • 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. These products may be selected as add-ons under the Finish Your Build tab.
  • 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
Shipping to FFL Dealer RequiredNo
Made In America?Yes
Caliber.308 Winchester
Barrel Length18"