Knight's Armament URX 3.1 Free-Float Handguard 13.5"

Location: Northern, AL

5 posts in this topic

Genuine Knight’s Armament URX 3.1 Hand-guard Assembly 13.5" with installation hardware, improved steel barrel nut and barrel nut installation wrench.

$198.00 Shipped (Sturmgewhr Member Pricing) - Numerous In-Stock


  • Main Body Construction: 6061-T6 with Mil-Spec Hard Coat Anodize Finish
  • 13.5” long free floating hand-guard for use on AR-15 pattern rifles and carbines with barrels 14.5” or longer.

  • Full length continuous Picatinny rail at 12 o’clock position, and short sections of Picatinny rail at the front and rear ends for mounting tactical accessories at 3, 6, 9 o’clock positions, eliminating the commonly unused sections of rail for a more comfortable grip and a total weight of 14 oz.
  • 5 Anti-Rotation QD Swivel socket points, 2 Rear (L & R), 3 Front (L, R, Bottom)
  • Accepts all Knight's Armament URX III compatible accessories (i.e. Hand-stop, rail panels, etc - not included).
  • Requires the use of a low-profile gas block, not compatible with A-frame front sights
  • New Old Stock, never installed with small Advanced Armament Corp logo on front right side. Light handling marks may be present from storage.
  • Four (4) Alloy Steel 1/4-20 Button Head Screws with thread locking compound applied.
  • Barrel nut provided is an improvement over the factory unit, produced from heat treated 4140 Chromoly steel finished with Mil-Spec manganese phosphate. The nut's castellated design aids to resist wrench slippage. The provided barrel nut is ~ 3 times stronger than the factory aluminum barrel nut.
  • As an additional value, a high strength steel barrel nut wrench has been included in the package for use with the improved nut.
  • Knight’s does not include a wrench with the URX 3.1 hand-guard which retails for ~ $300.00 and charges ~$120.00 for their nut wrench.This package deal is nearly 50% off retail price.


Accepted Payment methods: USPS & Western Union Money Orders, Apple Pay, Google Pay, Money Orders from other issuers and checks are also accepted, orders ship within 1 business day of funds clearing. No shipments outside the USA.




Edited by GunNerd73
Typo and photo arrangement corrections

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Do you know if this would work with any of the piston kits?  I would like to roll my own Piston driven AR with this setup if I could.

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still available?

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