The Magpul MOE SL Stock (Slim Line) is an American retractable stock for AR-15 and M16 rifles, manufactured by Magpul Industries in Colorado. It stands out for its slim profile and sleek silhouette, designed for operators equipped with body armor or modular gear who prioritize quick shouldering over minimal footprint.
History and Development of the Magpul MOE SL Stock
Magpul Industries, founded in 1999 in Colorado by Richard M. Fitzpatrick (former sergeant in the US Marine Corps’ Force Recon), has established itself as the world leader in polymer accessories for AR-15. The MOE (Magpul Original Equipment) range, launched in the late 2000s, includes versatile and accessible accessories: stocks, pistol grips, handguards and battery compartments.
The SL (Slim Line) is a sub-range introduced in the 2010s, with a clear objective: to reduce the profile of the accessories to adapt to modern configurations embedding body armor, tactical straps and modular equipment. The MOE SL Stock takes the achievements of the classic MOE while refining the lateral silhouette, rounding the heel and integrating an ambidextrous QD well. It quickly became a bestseller in the mid-range stock segment alongside the CTR.
Technical Specifications
| Feature | Specification |
|---|---|
| Designation | Magpul MOE SL Carbine Stock |
| Manufacturer part number | MAG347 (Mil-Spec) |
| Country of Origin | United States (Colorado) |
| Manufacturer | Magpul Industries Corp |
| Type | Slim-line carbine retractable stock for AR-15/M16 |
| Compatibility | Buffer tube mil-spec carbine |
| Material: | High-strength reinforced polymer |
| Weight (stock only) | 272 g (9.6 oz) |
| Weight (with buffer tube) | 386 g (13.6 oz) |
| Maximum length | 183 mm (7.2 inches) |
| Adjustment Range (LOP) | 84 mm (3.3 inches) |
| 6-notch | adjustment positions |
| Integrated | ambidextrous QD strap attachment (up to 1.5 inches) |
| Available colours | Black, FDE, OD Green, Stealth Grey |
Operation and Technical Particularities
The MOE SL is based on a one-piece reinforced polymer case, contoured to provide a particularly slim side silhouette. The rounded heel piece (rolled toe) and the sloping rubber butt plate are optimized for a fast and stable shoulder over a body armor or plate carrier, without snagging with MOLLE and side straps.
Unlike the CTR, the MOE SL does not have an anti-friction wobble lock. The release is done via two ambidextrous side levers , which are simpler and faster to operate than the lower lever of a standard M4 stock. The built-in ambidextrous QD accepts any standard 1.5-inch push-button pivot, and eliminates the need for additional side buckles. The SL’s construction is slightly thicker than the CTR in some places to compensate for the lack of friction lock, ensuring acceptable rigidity when firing.
Variants and Versions
The MOE SL family is available in several configurations adapted to different uses. The MOE SL Stock (MAG347) is the standard version described here. The MOE SL-S (MAG653) adds internal storage compartments for batteries or small accessories. The SL-K project manager is a shortened version for short or PDW configurations. The MOE SL-M is a minimalist variant with an ultra-low profile. All versions exist in Mil-Spec only (commercial tubes being largely abandoned). Standard colorways include Black, FDE (Flat Dark Earth), OD Green, and Stealth Grey.
Users and Areas of Use
The Magpul MOE SL equips numerous civilian AR-15 configurations, semi-automatic shotguns on the AR platform, as well as various military and police configurations. Its popularity is explained by its exceptional price-performance ratio: it offers a substantial improvement over the original M4 stocks for an intermediate cost between the classic MOE and the CTR. The slim profile and integrated ambidextrous QD make it particularly popular with users with body armor, but also with sport shooters in 3-Gun and USPSA carbine. It is also commonly used in the MOE Furniture conversion kits offered by Magpul.
Civil Possession in Switzerland
In Switzerland, the Magpul MOE SL Stock is freely available for purchase from specialist gunsmiths and AR-15 accessory retailers. As a weapon part (stock), it is free to acquire and does not require a special permit within the meaning of the Federal Weapons Act (Arms Act). Mounting the MOE SL on an AR-15 civilian semi-automatic rifle does not change the legal status of the weapon. As the stock is not an essential part within the meaning of the Arms Act, its replacement does not require notification to the cantonal authorities. Owners of AR-15 rifles simply need to make sure that their buffer tube is of mil-spec size, which is the standard of almost all modern rifles.
Conclusion
The Magpul MOE SL Stock combines affordable prices, sophisticated ergonomics and a slim profile adapted to modern configurations equipped with modular gear. With its built-in ambidextrous QD and bodyplate optimized for body armor, it is a preferred choice for sport shooters and tactical users who are looking for a reliable stock at no extra cost. It confirms Magpul’s place as the benchmark for polymer accessories for AR-15.
