CAR-15 Buttstock - "FiberLite"

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(14 reviews) Write a Review
$49.00 - $119.00

A nice reproduction of the Colt/Diemaco FiberLite Stock.

You can purchase the Stock only, or the full assembly with choice of Buffer Tube hole design.


  • Black
  • Green


Assembly Options:

  • Stripped is Buttstock only.
  • Assembly includes:
  • FiberLite Stock
  • Spring
  • Buffer
  • Lock Plate
  • Original style Lock Ring (or Castle Nut, your choice, please write a note in the comments at Check Out)


Buffer Tube Options:

  • 2 Position (Mil Spec)
  • 4 Position (Mil Spec)
  • 5 Position (Mil Spec - NOS part)
  • 6 Position (Mil Spec)



  • The first few collapsing buttstock examples were handmade prototypes and somewhat complicated in design (coming in 2022)
  • This was eventually replaced in 1966 with a much simpler sliding stock design made of aluminum. (Here)
  • Eventually the above Aluminum stock was replaced by a same shaped version in much lighter polymer - this is the product you are looking at now.
  • This design was then used up until replacement by the M4 version, which introduced the stock design still used today


Why buy this stock?

  • Nice reproduction FiberLite stock
  • One of the lightest stocks on the market today at only 4.3 oz
  • Many advanced shooter have gone back to this stock due to its ultra-minimalist design
  • Compact, when fully collapsed it's no longer than the buffer tube itself
  • Made in USA
  • 5
    Nice Stock

    Posted by pede81 on 30th Sep 2021

    Fits tight, looks good and was well worth the wait.

  • 5
    CAR-15 Buttstock

    Posted by Jp on 20th Mar 2021

    Well worth the price.

  • 5
    CAR-15 Buttstock

    Posted by Slade on 13th Mar 2021

    I am a huge fan of these stocks!!! High quality and excellent fit!

  • 5
    CAR-15 Buttstock

    Posted by Steve on 9th Oct 2020

    This stock is the best deal I have found. The quality is top notch. I own an original Colt N marked stock from the early 90s, and this reproduction 5 star. Unless you had the original next to it, I think it would be difficult for most to tell the difference. It's only lacking the slight marbling of the original Fiberlite. It appears very durable, and I will be using this stock on all future builds.

  • 5
    CAR-15 Buttstock Assembly

    Posted by Oldusafmsgt on 6th Oct 2020

    Excellent quality, great choice for a budget XM177/GAU clone build