M4E1 Enhanced Upper Receiver/Quantum Handguard Combo

$244.99 - $283.48
Out of stock

Save 10% when you buy the M4E1 Enhanced Upper Receiver and Quantum Handguard Combo! Our state-of-the-art Enhanced Upper Receiver combines the handguard mounting platform with the upper itself, condensing the parts needed to mount a free-floated handguard to a mere 8 screws.

This Upper Receiver Handguard Combo now includes our Quantum Handguard! Our Quantum Free Float Handguards minimize bulk while providing an adaptive system that is big on features. With multiple mounting options, this affordable, rigid system can adapt to any mission.


  • AR15 M4E1 Enhanced Upper Receiver
  • Quantum Handguard of choice
  • Handguard mounting screws
  • Removable 4-slot picatinny rail section

Enhanced Upper Receiver Features:

  • M4 Feedramps
  • .250 takedown pin holes
  • Lazer engraved T-marks
  • Comes assembled, with dust cover and forward assist installed
  • Machined from 7075-T6 forged aluminum

Quantum Handguard Features:

  • 1pc free float design
  • Removable 4-slot picatinny rail section for front sight
  • Built in anti-rotation tabs
  • 7 mounting surfaces for KeyMod and M-LOK accessories
  • 1.78" inside diameter fits most muzzle devices and 1.5" suppressors
  • Compatible with low profile gas blocks
Shipping to FFL Dealer RequiredNo
Made In America?Yes
Weight(s)Weights are for both Anodized Black and FDE Cerakote:

Keymod: 7" - 16.64 oz / 9" - 18.24 oz / 12" - 21.44 oz / 15" - 23.04 oz
M-LOK: 7" - 17.44 oz / 9" - 19.04 oz / 12" - 21.44 oz / 15" - 23.84 oz
Other Features-
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