Description
The Magpul MOE SL-S is the storage version of the popular MOE SL carbine stock, and it manages to add real usable storage without turning your buttstock into a brick. It's a direct-replacement collapsible stock for AR-15 and M4 carbines running mil-spec receiver extension tubes, so if you're upgrading a factory M4-style stock this one drops right on. The whole idea here is a slim, fast-handling stock that keeps your head up in a natural shooting position while still hiding a couple of sealed compartments you can actually use.
What the MOE SL-S Storage Tubes Actually Hold
There are two water-resistant tubes built into the left and right sides of the stock, and each one holds up to two CR123A lithium or AA batteries. You get to them from the rear in any stock position through hand-removable, O-ringed rubber plugs that are sealed and rated waterproof down to 10 meters. That makes it a smart spot to stash spare optic or light batteries, earplugs, or small parts you'd otherwise lose in a range bag.
Comfort and Fit on the MOE SL-S Carbine Stock
The sloping cheek weld gives you comfortable, repeatable contact without widening the profile, which is why folks running body armor tend to like it. The rolled toe and angled rubber butt-pad settle into a plate carrier nicely and the anti-slip pad keeps the gun planted on your shoulder. Length of pull adjusts about 3.3 inches, running roughly 11.3 inches collapsed out to 14.6 inches extended on a standard M4 tube.
Rock-Solid on the Buffer Tube
Magpul used an internal anti-rattle leaf spring here to cut down wobble on the receiver extension, and users consistently note how snug it locks up with zero slop. The dual-side release latch means you can adjust from either side and it stays snag-free, while the premium chrome-silicon lock spring handles years of hard use. There's also an ambidextrous QD sling swivel socket at the rear that plays well with Magpul's ASAP and other receiver-mount attachments. Made in the USA.
Key Specifications
- Manufacturer: Magpul Industries
- Model: MOE SL-S
- Manufacturer Part Number: MAG653-ODG
- UPC: 840815109587
- Color: O.D. Green
- Style: Collapsible
- Fit: Mil-Spec carbine receiver extension tube
- Storage: Two O-ring sealed tubes, waterproof to 10m
- Battery Capacity: Up to two CR123A or AA per tube
- Weight: 12.8 oz
- Weight with Receiver Extension: 16.8 oz
- Length, Max: 7.4 in
- Width, Max: 2.3 in
- LOP Adjustment Range: 3.3 in
- LOP Collapsed / Extended (M4): ~11.3 in / ~14.6 in
- Country of Origin: Made in USA
What’s Included
- Magpul MOE SL-S Carbine Stock (OD Green)
- Ambidextrous QD sling swivel socket (integrated)
Frequently Asked Questions
Will the MOE SL-S fit my AR-15?
It's a direct-replacement buttstock for AR-15 and M4 carbines running a mil-spec sized receiver extension (buffer) tube 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 not sure which you have, a quick measurement of your buffer tube diameter clears it up fast.
What can I actually store in the MOE SL-S storage tubes?
There are two sealed tubes, one on each side, and each holds up to two CR123A lithium or AA batteries. They're accessible from the rear through O-ringed rubber plugs rated waterproof to 10 meters, so they're great for spare optic and light batteries or small parts. Plenty of folks also toss in earplugs or a small cleaning item to keep it handy.
Does the MOE SL-S wobble on the buffer tube?
Magpul built in an internal anti-rattle leaf spring specifically to minimize play on the receiver extension. In real-world use, owners consistently report a snug, tight lockup with essentially no wobble. It carries a bit less friction than the original SL while still holding a solid fit.
Is the MOE SL-S a good choice with body armor?
Yes, the slim profile keeps your head in a more upright, natural position and the rolled toe with angled rubber butt-pad is designed to index cleanly against a plate carrier. The anti-slip pad also helps keep the rifle planted on your shoulder. It's one of the reasons the SL-S is popular with folks who shoot in kit.






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