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
  • 4
    Pretty nice but...

    Posted by Matthew Jacobs on 30th Sep 2020

    I had to remove quite a bit of flashing and resurface the plastic, otherwise its a nice repro.

  • 5
    . Perfect for my 723

    Posted by Todd Starke on 19th Jul 2020

    Great stock. Tight with no rattle. Just what I needed to finish my Model 723 clone

  • 5
    Great stock!

    Posted by Andy on 9th Jul 2020

    This stock is well-made and very compact, for the price you can't go wrong. Shipped quick and arrived fast so A+ on the service.

  • 5
    CAR-15 “Fiberlite” Buttstock

    Posted by Colt Enthusiast on 4th Jun 2020

    I have nothing but good things first of all to share about my current experiences with RetroRifles. This buttstock is incredibly close to the old vintage ones a few of my friend’s have. The quality is top notch, and the fit is tight and clean. This the best repro I could find So far.

  • 5
    Just what I was after

    Posted by Erich on 21st Feb 2020

    I'm very pleased with the stock that I received. Fits my milspec receiver extension perfectly and looks and functions great on my rifle.