AR15 Quantum KeyMod Handguards

Aero Precision AR15 Quantum KeyMod Handguards

AR15 Quantum KeyMod Handguards Product Sku: APPG400001

Our Quantum KeyMod 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. Machined to exacting dimensions from 6061-T6 aluminum it is the perfect handguard for your next AR15 build.


  • Designed to work with our M4E1 Upper Receiver
  • 1pc free float design
  • Removable 4-slot picatinny rail section for front sight
  • Built in anti-rotation tabs
  • 7 mounting surfaces for KeyMod accessories
  • 1.8" inside diameter fits most muzzle devices and 1.5" suppressors
  • Compatible with low profile gas blocks
  • Made in the USA

Are you attaching this handguard to a standard threaded upper receiver?
Make sure to select "Yes" under the BAR Barrel Nut option above (shims included). Our handguards use the BAR interface and do not work with a standard barrel nut. If you are using our M4E1 Enhanced Upper Receiver, no additional pieces are needed. Purchased with a handguard, the BAR Barrel Nut is $20 ($40 when sold separately).

*Please note - This handguard is specific to the AR15/M4E1 platform. It is not compatible with the M5 .308/M5E1 platform.

Platform AR15
Material Machined from 6061-T6 aluminum
Series KeyMod
Weight(s) 7" - 7oz, 9" - 8.8oz, 12" - 11.35oz, 15" - 13oz
Other Handguard Screw Torque - 25 in-lbs

Customer Reviews

1 Item(s)

Great Budget Handguard! Review by Sean
I've been building ARs for a while now and have purchased top and bottom tier parts and accessories with mixed results overall. This new Quantum series is honestly one of the best budget options I've seen so far. While it is not the absolute highest quality handguard I've ever handled, I can have three of these for that price and they are excellent for that cost. The anodizing has a couple of spots, but I have no real criticisms beyond that.

Aero has been great with everything I've purchased, but in confidence! (Posted on 5/4/2016)

1 Item(s)

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