FRS-15 Enhanced Stock Kit (Black)

SKU #4001QB



Installation Video Installation Video    Printable Installation Instructions

U.S. PATENT NUMBER 9,568,273 B2

Availability: In stock


For more information on converting A2 "rifle length", or pinned carbine stocks please check our video section located on the home page.





Sadly, several states in our great country mischaracterize certain types of semiautomatic firearms, like AR-10 and AR-15 variants, as "Assault Weapons". Some states have enacted laws that restrict common features, including a pistol grip and adjustable stock. Somehow they believe that these features make firearms more dangerous. For law abiding citizens that own these weapons, it could mean confiscation and possibly criminal prosecution.

The FRS-15 Rifle Stock is designed help law abiding citizens keep their firearms in compliance with these laws. Replacing the pistol grip and adjustable stock with the FRS-15 rifle stock, effectively eliminates these two prohibited characteristics while preserving all of the weapons functionality.

It took nearly two years of research and development for the FRS-15 Rifle Stock to reach its current form. It is an excellent blend of form and function. Shooters of all types will appreciate the feel of its traditional hunting rifle style curved grasp and solid shouldering.

With multiple sling hard points and adjustable cheek rise, (optional) the FRS-15 can be easily configured for hunting, plinking, tactical training, or competition shooting. Many other upgrades and accessories are also available.



Our FRS-15 kits are not only designed to be the most ergonomic solution for featureless conversions, they are also tailored to meet our customers individual needs and budgets. Many people use their rifles in different ways and our Standard and Enhanced kits allow for maximum utility. The difference in the two kits is the Buffer Tube Cover. The Standard FRS-15 kits are tailored more for those who primarily shoot from a bench or prefer a two point sling. The Enhanced FRS-15 kits include two additional quick detach sling hard points. The advantage is that if a user prefers a single point sling, the center of gravity is in line with the barrel which keeps the muzzle pointed straight down.





  • Fits any standard carbine length recoil system
  • 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)


  • Two quick detach sling hard points
  • Single point sling loop behind grip
  • Aggressively checkered grip
  • Interchangeable side panels
  • Grip storage compartment
  • Rubber buttpad
  • Many upgrades & accessories available


  • Material: 33% Glass filled Nylon
  • Hard points: Black oxide coated steel
  • Overall length 13"
  • Length of pull: 14"
  • Stock weight: 11.5 oz.
  • Buffer tube cover weight: 3.3 oz.
  • Buffer tube cover length: 7.5"


  • FRS-15 Rifle Stock
  • Enhanced Buffer Tube Cover
  • Ergonomic Endplate
  • Mounting hardware
  • 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.


great stockReview by junior
great stock didn't like it at first. Installed after looking at it for a while and I like it now so I ordered one more. Very fast shipping, great company, thanks. (Posted on 7/15/2018)
Great Product Review by RB clipper
Great product ! After researching I purchased the FDE , but after shooting a friends AR with the same stock it looks great handles well but my only con for me whould be the length of the stock is too short and that's a problem when you're a lefty it puts my face too close to the ejection port. So just wondering if there's a thicker stock padding that can be attached.
If not I can only recommend it to Right hand shooters that don't mind the stock all the way forward . (Posted on 3/19/2017)
The FRS-15 enhanced stock kitReview by Holystoner
I watched Mr. Thordsen's video a few times and when my package arrived I was able to install it in the exact order Alan showed in his video. The results were instantly gratifying and the pull length with my ACOG that I have been using for some time was perfect and the feel of having my thumb over the stock made me convinced I made the right choice. I added the Odin works EMR mag release and the only thing I need to do is get an ambidextrous safety, otherwise my conversion to fearureless is complete!
No regrets whatsoever - I will not register with the state! (Posted on 3/16/2017)
DisappointedReview by Disappointed
Your website doesn't work very well...I created an account and added this to my wishlist just to be notified when this product was back in stock as you said to do, expected an email as they are now available and I didn't get a notification. Disappointed. (Posted on 1/28/2017)
excellent "featureless"Review by MrMeat
Yes, it is true here in California that they have some new fangled rules. (I won't get into the legitimacy of them). And along comes Thordsens, to have a product that eliminates the "nasties" on your gun. I just finished installing the FRS-15 and painted the complete gun with a camo lookalike. That way the gun is not one of those evil looking "black guns" and is fully compliant. I haven't shot it yet, but there should be no problem and I am thinking about doing the same for my .300. Thank you, Thordsens! (Posted on 10/30/2016)
Bought 2Review by David
Bought the 1st just to try it out and was very impressed on how easy it was to shoot using a "regular" rifle stock vice a pistol grip. Took some time to adjust the scope to get the correct eye relief and spot well. Adapted so well I bought the 2nd so I don't have to put up with the BS this Socialist state continues to subjects the gun owner with. Signed all the petitions for a recall on what the communist governor signed into law. (Posted on 9/9/2016)
Excellent DesignReview by Bodega Bay Raider
I've never been a fan of the high buttstock position of AR rifles necessitated by the buffer tube mounted stock. The FRS-15 lowers the buttstock position to where one on a typical rifle would be located. Had a very minor issue with a few sharp edges but that was easily fixed with minor filing. Considering the stock has to fit the inevitable variances in rifles I don't consider that a big deal at all. And I won't have to register it as an "Assault Rifle" in January of 2017 here in the Peoples Republic of CA. Thanks to Thorsden Customs for helping us poor souls in CA and our rediculous laws passed by politicians with zero knowledge of guns! (Posted on 8/10/2016)
Better than expected Review by Jack Mac
I shall echo another review, I purchased the FRS because of the insane new CA laws. Let's face it it does look as attractive as we would like it but after firing the new setup a few times, it handles exacting the same as a traditional wooden stock long rifle. It is comfortable and stable. For those of you who think you can't reach the various releases your hands are too small, reaching the mag release and ambitious bolt release is just fine for me. Having a standard mag release is much better than having to shotgun the weapon to reload. Great fit and finish to this product. I would recommend this to those of you in the Peoples Republics of CA and NY. (Posted on 7/16/2016)
great productReview by bob d calif
I purchased this stock so that I would be free from the scary features that Calif hate so much. After a couple range visits it feels quite natural. The ergonomics are that of my more traditional rifles (bolt action). Enjoy it so much that I equipped all of mine with them. Little did I know that Gov. Brown was gonna sign the most recent bills. I now sport the featureless rifles not covered in the "Assault weapons ban".

Ps. Not part of my review but, I hope you are tooled up for the onslaught of orders that should be coming your way. Excellent product. Great Company. Thanx.
Bob (Posted on 7/1/2016)

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