Magpul MOE SL-S Stock – Mil-Spec – AR15/M4 – MAG653

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The Most Intuitive And Most Efficient Storage Stock In The Market

The Magpul MOE SL-S Stock – Mil-Spec is a drop-in replacement buttstock for AR15/M4 carbines using mil-spec sized receiver extension tubes. Designed with dual, rear-accessible compartments, you can store extra batteries that are very useful during tactical operations.

The Magpul MOE SL-S Stock – Mil-Spec is the storage-capable version of the flagship Magpul MOE SL™ carbine stock. It is designed with a sleek profile, a dual-side release latches, and waterproof battery tubes making it the slimmest storage tube stock available in the market.

Magpul MOE SL-S Stock - Mil-Spec - AR15/M4 - MAG653

Enhanced Cheek Weld And A 10-m Waterproof Storage Tubes

The SL-S provides an enhanced cheek weld and a 10m waterproof storage compartments sealed with O-ring. It fits into the narrowest package possible to allow a more upright head position and minimize bulk on the aesthetics of the rifle.

Magpul MOE SL-S Stock - Mil-Spec - AR15/M4 - MAG653

Rolled Toe And Angled Rubber Butt-pad

The MOE SL-S is the most intuitive, comfortable, and efficient storage stock available. It has a rolled toe and angled rubber butt-pad that is optimized for use with body armor. An ambidextrous QD sling swivel socket is included for quick detach sling options.

The unique leaf-spring tension system provides a solid fit on mil-spec receiver extensions, with slightly less friction than the original SL.

Magpul MOE SL-S Stock - Mil-Spec - AR15/M4 - MAG653


  • Mounts on mil-spec sized carbine receiver extension tube (not included) from manufacturers such as Colt, LMT, Ruger, S&W, SIG, and others (please see the note below)
  • Two water-resistant battery storage tubes located on the left and right sides of the stock
  • Each tube will store up to two (2) CR123A lithium or AA batteries
  • Tubes are accessible from the rear in any stock position via hand-removable, o-ringed rubber plugs that are waterproof to 10 meters
  • Sloping cheek weld combines a slim profile with user comfort
  • Dual-side release latch provides easy adjustment while remaining anti-snag
  • Premium chrome-silicon lock spring provides positive locking and long service life
  • Internal anti-rattle leaf spring minimizes wobble on the receiver extension tube
  • Rubber butt-pad offers an anti-slip surface and increases impact protection
  • Rollover on the toe allows for easier shoulder transitions and better fit when using body armor
  • Compatible with Magpul ASAP®, ASAP® QD, and other receiver-mount sling attachments
  • Made in the U.S.A.

Sling Mounts:

  • Rear – Integral push-button QD swivel sling mount accommodates up to 1.5″ swivels (ambidextrous)
  • Rear/Bottom – 1.25″ sling loops


  • Weight: 12.8 oz.
  • Weight, w/receiver extension: 16.8 oz.
  • Length, max: 7.4 in.
  • Width, max: 2.3 in.
  • LOP Adjustment Range: 3.3 in.
  • LOP, M4 Collapsed: ~11.3 in.
  • LOP, M4 Extended: ~14.6 in.


  • There are two basic sizes of M4 Carbine receiver extensions (buffer tubes): mil-spec and commercial-spec. The MOE SL-S will only fit with the common mil-spec tube.
  • * Specifications based on standard-length (flat-back) M4 Carbine receiver extension and may vary depending on tube manufacturer.

Products available on this page:

Have Questions About this Product?

The AT3 Tactical store has a 90 day no-hassle return policy for products in good condition. You can view the full details of our return policy here.

If you encounter an issue or defect with a product after 90 days of your purchase, you can refer to the manufacturer for a warranty claim. Their policies are below.

Magpul Warranty Information

If you ever experience an issue with a Magpul product at any time, regardless of where it was purchased, please contact us directly and we’ll do everything reasonable to help you.

To make a return, please take the following steps:

  • BEFORE returning any products, please contact us first to receive an RMA number (Return Merchandise Authorization) and prominently write it on the outside of the package. Packages will not be accepted without an RMA.
  • Include a note with your name, shipping address, phone number and email, RMA number, and reason for the return (including, if applicable, information about the firearm, ammunition, and usage environment for defective returns). Do not send ammunition.
  • Wrap the item with quality padding and place it in the original packaging or in an appropriate box for shipping.
  • A UPS shipping label will be provided in your shipment. If using the original packaging, remove or cover the original shipping label. Tape the preprinted return shipping label to the outside of the box. Drop package at an official or authorized UPS drop-off location.
  • All refunds will be applied to the credit card used for the original purchase. You should allow one to two billing cycles for the refund to appear on your statement.

Disclaimer: Manufacturer’s warranty is subject to change without prior notice.

Customer Reviews

Based on 5 reviews
Rodney O’Brien
Moe sls

Great stock looks good feels good on the shoulder.. battery compartment fit tight and Easy to access.. liked it so much bought another one in a different color

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

Mike Winning
Magpul SL-S FDE

Really nice stock probably my all time favorite so far.

Thanks for sharing your feedback! We're glad you're satisfied with your purchase.

Nicholas Iverson
Minimal stock wobble, somewhat annoying install

Overall it's a nice stock with a solid lock up mechanism that has much less wobble than other options. However, the installation method for the stock requires a small tool to grab the hook so that it will slide onto your buffer tube. There is no included tool, which is fine as it's non specific. Personally I would have rather gone with the str for both the aesthetic and ease of install. The slight bit of wobble is easily remedied with a strip or two of electrical tape or a piece soft side Velcro on the back half of your buffer tube which arguably creates even less wobble than this stock does on its own.

Thank you for taking the time to leave a review for our Magpul MOE SL-S Stock. We're glad to hear that you've found the stock to have minimal wobble and a solid lock up mechanism. We apologize for any inconvenience with the installation process, but we appreciate your feedback and will take it into consideration for future improvements.

Scott Kohler

Magpul MOE SL-S Stock - Mil-Spec - AR15/M4 - MAG653

Thanks for sharing your feedback! We're glad you're satisfied with your purchase. Cheers!

Shan Knight Bey

In one word outstanding !!!!!
Magpul's are the best, and I am very pleased with my purchase.
The best part of my experience was the service I received from AT3 Tactical, the response and
shipping time from your warehouse to my front door was incredible !!! I have sense told everyone
in my gun club about your great Company.


Thanks for sharing your feedback, Shan. We're glad you're satisfied with your purchase. Cheers!