JL Billet Modular Billet Stock (MBS™)

$249.95 - $299.95
(26 reviews) Write a Review
2.00 LBS
Minimum Purchase:
1 unit
Free Shipping
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JL Billet's MBS™ (Modular Billet Stock) is a patented all aluminum modular buttstock designed to fit AR15 & AR10 Mil-Spec collapsible buffer tubes

We start with chunks of 6061 T6 aircraft grade aluminum and precision CNC machine each piece to ensure an exact fit and perfect function. The MBS™ is a modular design that allows all components of the stock to be replaced if damaged, you can also change up the color and design to set your AR15 apart from the rest. We don't use any plastic on this stock other than the rubber base and cheek pads, this allows you to Cerakote or anodize whatever color you like to accessorize and customize to your specific needs. RAW STOCKS WILL SHIP UN-ASSEMBLED UNLESS REQUESTED OTHERWISE.

The MBS™ is skeletonized to reduce weight while maintaining strength and giving a look like nothing else on the market. Weight without a buffer tube installed is only 16 oz. It's not for the weak guys who can't handle a few extra oz. in their rifle.

**For those of you in California, the MBS can be used as fixed stock as well with the use of a longer trigger set screw**

US Patent #8,984,791 B1


What's in the box?

  • MBS™ Buttstock
  • Trigger set screw
  • Allen wrench
  • Round quick disconnect sling mount w/ hardware
  • Rear rubber pad
  • Rubber cheek rest
  • Made in USA

We also offer bolt-on accessories to accommodate the MBS™ in whatever situation you're in. Bolt on picatinny rail, spike/hammer pad, quick disconnect sling mounts, standard sling mounts, cheek pads, and an adjustable cheek riser.


If this item is ordered in a raw condition (raw aluminum coating option) it will be shipped disassembled. If you would like the stock assembled please leave a note on the order.


Warranty Information
Limited Lifetime from date of purchase against manufacturing defects.

26 Reviews

  • 5
    This stock is better than I expected

    Posted by Ricky Cook on 18th Sep 2020

    Totally impressed. I was hesitant at first because of the price . But it is definitely well worth it . I will be buying more in the future

  • 5
    Great Product

    Posted by Ray Howard on 27th Aug 2020

    Great Product shipped fast best stock ever

  • 5
    Pretty and Precise

    Posted by Thomas Mitchell on 29th Jul 2020

    I was hoping to find a straightforward stock with a minimalist aesthetic yet still possess some cutting edge charm. This is that. Well done.

  • 5
    Look no further!

    Posted by Brook Hadley on 21st Jun 2019

    You will be hard pressed to find a stock of higher quality,so look no further!

  • 5
    Great quality. Solid and unique

    Posted by Unknown on 31st May 2019

    I bought this for my full raw AR build and loved the quality. I put it together rather easily watching the YouTube video. I thought fitment was nice, it was a little loose around the carbine buffer tube but I put a thin strip of plastic from a water bottle and then slid it on and it's now very tight and still adjusts easily. I did run into a but if a tight fit with the actual aluminum trigger piece thing and it wanted to catch on the stock but I just used some sandpaper on the inside and noone will ever see it but me. Highly recommend and would also say use some mother's aluminum polish to really get her to shine up nice

  • 4
    Well made looks great...

    Posted by William O Berg on 20th Aug 2018

    This stock completes my "All Raw" aluminum build. It is well made and looks as good as it feels. The attention detail sets this stock apart. I gave it 4 stars because no instructions were sent for assembly. JL Billet will assemble for you if you ask. Being a mechanical engineer I always prefer DIY. I was able to figure it out in short order, but an exploded diagram would be helpful. Some of the screws are for decoration and it is not apparent until you put everything together. I also have a few extra parts that will need to assembled when I figure out where they go. Have them assemble it for you and this is a 5 star product.

  • 5
    Great MBS!!!!!

    Posted by Ron Holbrook on 12th Jul 2018

    The shipping was fast, looks as good as in the picture, Overall i like the style of it very comfortable.. Solid piece...only wish it was available in the contrast, but Thats me being picky..thanks JL i will be ordering more Products very soon.

  • 5

    Posted by Bryon funderburg on 11th Apr 2018

    i have to say that the mbs is at the top of quality and ascetics. The best part of this stock is that its all aluminum and wont crack or break like there platic counterparts.I havent seen any other buttstocks even close to this and if you combine it with any other JL BILLET furnitue your gonna be happy you did. Only thing i didnt like was when you press a certain color you want the web site dont generate the picture to go with it. Great job guys i have all your .308 furniture and my rifle is looking sweeter than any others ive come across

  • 5
    Awesome Stock

    Posted by Tom on 7th Feb 2018

    I saw the add in recoil magazine for your modular billet stock and had to have one. It will be the finishing touch on my custom built .308 rifle. Cant wait to get it coated and installed. Great value for the price. Beats plastic any day.