Description
The Magpul MOE SL-S is the storage-capable member of the MOE SL family, and it earns its spot by giving you real waterproof storage without turning your buttstock into a bulky brick. It drops right onto any mil-spec carbine receiver extension, so if you're running a standard AR-15 or M4 setup you can swap it on in a few minutes with no gunsmithing. This Stealth Gray finish keeps things low-key and pairs nicely with a wide range of builds.
What sets the SL-S apart from the standard SL is the pair of battery tubes tucked into each side of the stock. Each one holds up to two CR123A lithium or two AA batteries, and they're sealed with O-rings rated waterproof to 10 meters. That means spare batteries for your optic, light, or laser stay dry and protected no matter what the weather throws at you. The plugs are hand-removable and accessible from the rear in any position, so you're not fighting to get at your gear when you need it.
Where the MOE SL-S Storage Stock Earns Its Keep
Magpul placed the storage tubes to work with the sloping cheek weld rather than fight it, which lets you keep a more upright head position behind the optic. The rolled toe and angled rubber butt-pad are shaped to ride cleanly over body armor and plate carriers, making shoulder transitions smoother when you're kitted up. Dual-side release latches keep length-of-pull adjustments quick and snag-free from either hand.
Fit and Build on the SL-S Carbine Stock
Inside, a leaf-spring tension system snugs the stock down onto mil-spec extensions with slightly less friction than the original SL, so it locks up tight without rattling around. The reinforced polymer construction shrugs off abuse, and an ambidextrous QD sling swivel socket is built right in to handle push-button swivels up to 1.5 inches. It's made in the USA and built to the same standard that put Magpul gear on rifles all over the world.
Key Specifications
- Manufacturer: Magpul Industries
- Model: MOE SL-S
- Manufacturer Part Number: MAG653-GRY
- UPC: 840815109570
- Color: Stealth Gray
- Material: Reinforced Polymer
- Style: Collapsible
- Fit: Mil-Spec AR-15/M4 Carbine Receiver Extensions
- Storage: Two O-ring sealed tubes, waterproof to 10m
- Battery Capacity: Up to two CR123A or two AA per tube
- Sling Mount: Ambidextrous QD swivel socket (up to 1.5")
- Weight: 12.8 oz
- Length: 7.3 in
- Width: 2.4 in
- Country of Origin: Made in USA
What’s Included
- 1x Magpul MOE SL-S Carbine Stock (Stealth Gray)
Frequently Asked Questions
Will the MOE SL-S fit my AR-15 buffer tube?
It's designed for mil-spec sized carbine receiver extensions, which is the most common type found on AR-15 and M4 builds from makers like Colt, LMT, Ruger, S&W, and SIG. It will not fit commercial-spec tubes, which are slightly larger in diameter. If you're unsure which one you have, a quick measurement of your buffer tube will tell you.
What can I store in the SL-S battery tubes?
Each of the two side tubes holds up to two CR123A lithium or two AA batteries, so you can keep spares for your optic, weapon light, or laser close at hand. The tubes are sealed with O-rings and rated waterproof to 10 meters, which keeps everything dry in rain or river crossings. You can also stash small parts or gear in there if you don't need the battery space.
How is the MOE SL-S different from the standard MOE SL?
The main difference is the storage capability. The SL-S adds two waterproof battery compartments that the standard SL doesn't have, positioned to keep the slim profile intact. It also uses a leaf-spring tension system that runs with slightly less friction than the original SL when adjusting length of pull.
Does the MOE SL-S work with body armor?
Yes, it's built with that in mind. The rolled toe and angled rubber butt-pad are shaped to ride over plate carriers and body armor, which makes shouldering the rifle and running transitions cleaner when you're geared up. The rubber pad also gives you a bit of anti-slip grip and extra impact protection.







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