FRS-15 Gen III ARAK 21 Stock Kit Bundle

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  • Our 4300P Series FRS-15 Gen III Gas Piston Stock Kit
  • Gas Piston Cheek Rest (Attached)
  • Recevier Endcap Kit

Legislation towards the AR platform in states like California and New York, have made Featureless Rifles extremely popular in these states. Additionally, the more traditional rifle stock look-and-feel of the FRS-15 Gen III is appealing to gun owners nationwide. Just like with our earlier model of the FRS-15 Rifle Stock, the FRS-15 Gen III is designed to help law abiding citizens keep their firearms in compliance with current and upcoming laws. Replacing the pistol grip and adjustable stock with the FRS-15 Gen III rifle stock, effectively eliminates these two prohibited characteristics while preserving all of the weapons functionality.


  • Fits ARAK 21, Available in OD Green or Flat Dark Earth by request only (Contact us by email for more information)


  • Bottom or side mount sling loops (Optional)
  • Thickened Grip
  • Interchangeable side panels
  • Aggressively checkered grip
  • Grip storage compartment
  • Rubber buttpad
  • Many upgrades & accessories available


  • Material: 33% Glass filled Nylon
  • Overall length 12.5"
  • Length of pull: 12.5" Min (for .308) to 15.5" Max"
  • Stock weight: 20.5 oz.


  • 4300 Base FRS-15 Rifle Stock Kit
  • Three LOP Spacers
  • Recevier Endcap Kit
  • Gas Piston Cheek Rest (preassembled)
  • Mounting Hardware
  • Mounting Wedge
  • Full color installation instructions


It is the responsibility of firearms dealers and private firearms owners to know and fully understand all federal, state, and local firearms laws in their area. Thordsen Customs LLC will not be held liable for any misuse of its products and will assume that our product(s) comply with state and local laws unless otherwise notified by authorities.

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