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IWI ARCA Handguard 15.5″

In close collaboration with Jeff Cross, owner of Cross Machine and Tool, IWI US has witnessed a growing demand, in the M4 community, to both utilize and fully integrate the popular ARCA Swiss rail system into the actual rail. Many rails today require the user to lose all M-LOK sections and other attachment points along the bottom of the rail in order to attach a separate ARCA section. Now being fully integrated into the rail, the Z15ARCA15 gives the shooter confidence in the ARCA’s durability that it cannot come loose during hard usage. The ARCA Swiss design gives the shooter the unique ability to quickly adjust configurations of accessories such as tripods, bipods, and supportive shooting bags on the rifle and to remain secure during firing and movement. In addition to the flat base, the rail also utilizes Magpul’s M-LOK technology at the three primary quadrants (3, 6, and 9 o’clock), as well as the upper and lower 45’s. Currently, this handguard is offered in 15.5” and 17” for the AR-15 only. Staying true to form as with all IWI US handguards, we utilize a machined steel barrel nut that adds structural integrity between the mating surfaces of the barrel extension and the upper receiver along with managing heat throughout the system. All IWI US handguards are built out of 6061-T6 aluminum for extreme integrity during hard use. Overall, this rail will make a great addition to any purpose-built rifle that is backed by an 85-year-old company that prides itself on providing robust products to end users around the world.

“The endless modularity that comes along with putting any ARCA rail on your rifle goes without saying.. The 15+ inches of flat surface was a very welcomed bonus, and sits very flat on almost anything you set the hanguard on.” Matt Kitzmiller IWI Proteam Shooter

“The ARCA style rail incorporated in my Zion hand guard is crucial for fast deployment and positional changes when using a bipod or shooting bags in 3 Gun. It allows me to move my bipod close to the magwell for shooting off of small short spaces and allows me to run a bag for barricades or different shooting props. This hand guard modification is a must have for competition shooters, military or law enforcement.” George Dorbert IWI Proteam Shooter


  • 15.5″ Rail with full length top Picatinny rail
  • IWI steel barrel nut
  • IWI barrel nut wrench
  • Mounting hardware

Suggested Torque:

  • Barrel nut: 45 foot pounds
  • Rail screws: 45 inch pounds

Made in the USA with 6061-T6 aluminum

Note: This item is only compatible with standard milspec AR upper receivers


In stock


Export Notice:

This is an item controlled for export by the International Traffic in Arms Regulations (ITAR). These controls take the form of export regulations and export license requirements.

As part of the express consideration provided for receipt of IWI US’s goods, technical data and/or services, you, our customer, acknowledge that the export, re-export or other transfer, directly or indirectly, of the goods, technical data and/or services provided by IWI US in violation of U.S. law is prohibited. Customers acquiring ITAR goods, technical data and/or services from IWI US shall be responsible for obtaining any necessary U.S. or other government authorization required to ensure compliance with applicable export laws.


 Cancer and Reproductive Harm –

Additional information

Weight 2.25 lbs


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