Our take: The URX 3.1 13.5" Rail System is fully licensed by Knight’s Armament, a real steel firearms maker known for their line of civilian and military rifles, including the SR15 and SR25. This railed handguard, which is featured on a new line of airsoft M4A1 AEGs by ARES, is CNC-machined from solid 6061 aluminum alloy for extreme ruggedness. It also features a free-float design for zero wobble. Loaded with approximately 28 inches of real estate for mounting foregrips, flashlights and other accessories, this KAC rail system is compatible with most metal gearbox airsoft M4 and M16 AEGs. For a modular and tactical custom finish, upgrade your airsoft gun with this new Knight’s Armament licensed URX 3.1 13.5-inch rail system today.
- CNC-machined aluminum construction
- 28 inches of combined rail space
- Built-in QD ports for slings
- Free-float installation for zero wobble
- Compatible w/ most metal gearbox M4 AEGs
Construction: CNC Aluminum
Weight: 13.4 oz
Length: 13.5" in.
Compatibility: Most metal M4/M16 AEGs
Package includes: 13.5-inch rail system, mounting screws
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