Thordsen Customs FRS Gen III Rifle (A2) Stock Kits

  • $139.95

Thordsen Customs is proud to announce the release of the FRS-15 GEN III Featureless Rifle Stock. This new design builds on what we’ve learned from previous versions and through customer feedback. It offers distinct form and function and provides new options for shooters while its predecessor, the current FRS-15 Gen II, remains a relevant and economical option for featureless conversion.



Printable Installation Instructions

Legislation towards the AR-15 and other weapon platforms, in states like California and New York, have made “going featureless” a viable alternative to forced registration. Just like with our earlier models, the FRS-15 GEN III is designed to help law abiding citizens keep their firearms in compliance with current and upcoming laws. Additionally, the more traditional rifle stock look and feel of the FRS-15 GEN III appeals to gun owners nationwide and not just in restrictive states.


  • Thicker grip
  • Shorter starting length of pull (Carbine and Gas piston)
  • Stackable length of pull spacers up to 3.5"
  • Multiple sling loop options
  • Beefier construction
  • Adaptable to CAA and MFT cheek rests (accept rifle)
  • Adaptable to platforms other than AR-15, such as AK-47
  • Heavier, for better rifle balance
  • More traditional look



Overwhelming demand by our customers was the driving force behind our Rifle Length Recoil kit. Many AR-15 owners utilize a fixed (A2) stock on their rilfes. Changing the recoil system to work with the GEN II FRS-15 stock can get expensive and may alter the rifles cyclic timing making it unreliable or even dangerous. This kit solves the problem by utilizing special shortened spacers that allow the stock to run under the buffer tube. The buffer tube is finished off with a slip on foam cover.


  • Fits rifle length recoil systems
  • Fits any brand of forged AR-15 receiver
  • Fits many brands of billet AR-15 receivers
  • Fits many DPMS profile AR-10 variant lowers (with optional adapter)
  • Fits Black Rain Ordinance and Windham Weaponry AR-10 variant lowers (with optional adapter)
  • Fits Smith & Wesson M&P 15/22 (with optional adapter)


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


  • Material: 33% Glass filled Nylon
  • Overall length 13"
  • Length of pull: 14.0" min- 17.0" max
  • Stock weight: 20.5 oz.


  • FRS-15 GEN III Rifle Stock
  • Rifle Tube Clamp
  • Foam Tube Cover
  • Ergonomic Endplate
  • 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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