Magpul MOE SL-S Carbine Stock – Mil-Spec AR-15 Buttstock with Waterproof Storage

The Magpul MOE SL-S is the pinnacle of AR-15 carbine stock design — a mil-spec direct replacement buttstock that combines the slim, snag-free profile of the flagship MOE SL with the addition of a true waterproof storage compartment. If you’ve been looking for the slimmest storage tube stock available for your AR-15 or M4 carbine, the MOE SL-S delivers everything you need in the narrowest package possible. Made in the USA, it’s built to the exacting standards that have made Magpul the benchmark for AR-15 furniture.

Slimmest Storage Stock Available – Waterproof Battery Tubes

The MOE SL-S earns its Storage designation with dual O-ring sealed, 10-meter waterproof battery tubes that keep batteries, fire starters, or other small essentials protected from the elements. What makes the SL-S exceptional is how Magpul engineered that storage capability into the narrowest profile possible — you get genuine waterproof storage without the bulk that typically comes with storage stocks. The result is a stock that carries your essentials without adding unnecessary width or weight to your rifle build.

Enhanced Cheek Weld & Upright Head Position

The SL-S’s slim profile isn’t just about aesthetics — it directly improves your shooting position. The narrow package allows a more upright head position that promotes a natural, consistent cheek weld across a wide range of shooting positions. Whether you’re shooting from a bench, prone, or on the move, the SL-S puts your head in the right position for fast, accurate target acquisition. The enhanced cheek weld geometry is particularly valuable for optics-equipped rifles where consistent eye relief is critical.

Dual-Side Release Latches, QD Socket & Body Armor Compatibility

Dual ambidextrous release latches make length-of-pull adjustments fast and intuitive for both right and left-handed shooters. A rolled toe and angled rubber butt-pad are specifically optimized for use with body armor, preventing the stock from riding up during shouldering. An ambidextrous QD sling swivel socket is included for direct sling attachment. Magpul’s unique leaf-spring tension system provides a solid, rattle-free fit on mil-spec receiver extensions with slightly less friction than the original SL for smooth, consistent adjustments.

Key Features

• Direct replacement for AR-15/M4 mil-spec carbine receiver extensions
• Dual O-ring sealed, 10m waterproof storage tubes
• Slimmest storage stock available – minimal bulk, maximum function
• Enhanced cheek weld with upright head position geometry
• Dual ambidextrous release latches for fast length-of-pull adjustment
• Rolled toe & angled butt-pad optimized for body armor use
• Ambidextrous QD sling swivel socket included
• Available in Black and FDE – Made in the USA

Price: $89.99. The MOE SL-S — the most intuitive, comfortable, and efficient storage stock available for your AR-15 build.