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The 300 Blackout is a versatile cartridge, but shooting heavier subsonic loads comes with a catch: standard 5.56 magazines weren't designed for those longer, wider bullets. The wider nose of a 200+ grain subsonic round will bind and cause feeding issues in traditional magazines. Lancer engineered the L5AWM specifically to solve this problem. The internal geometry is completely updated to let those heavier cartridges stack properly, which means reliable feeding instead of the stoppages and hangups you might experience with general-purpose magazines.
This magazine combines an impact-resistant polymer body with a one-piece hardened steel feed lip assembly that won't bend, crack, or deform under use. The aggressive surface texture improves grip and makes reloading smoother, while the stainless steel spring and non-tilting follower maintain consistent performance across extended storage and repeated firing. Lancer designed it for military, law enforcement, and competition use, so it's engineered to perform when it matters.
The translucent smoke finish lets you check your round count at a glance without sacrificing discretion. The magazine body is molded with 300 Blackout markings so you can instantly tell it apart from your 5.56 magazines, and it ships with a contrasting flat dark earth floor plate for quick visual identification. At 20 rounds, this capacity works well for range sessions, benchrest shooting, and compact AR builds where a shorter mag fits better in equipment and handling.
The L5AWM is compatible with AR-15s, M4s, M16s, and other modern weapon systems including SCAR, HK416, and AR variants. Made, tooled, and assembled in the USA, this magazine rounds out a 300 Blackout build with real reliability and thoughtful design.
Yes, the L5AWM 300 Blackout magazine can feed 5.56 ammunition, but it's specifically engineered for the heavier, wider-nose subsonic 300 Blackout rounds. For lightweight supersonic 300 BLK ammunition under 150 grains, Lancer recommends using a standard 5.56 L5AWM magazine instead, since the geometry of lighter supersonic rounds more closely matches 5.56 cartridges.
The internal geometry is completely redesigned to stack longer, heavier subsonic bullets properly without binding or hangups. Standard 5.56 magazines have feed issues with 200+ grain subsonic rounds because they weren't designed for that bullet shape and weight distribution. This magazine eliminates those stoppages and feeding failures that come with generic magazines.
Absolutely. The translucent polymer body is impact-resistant and tested for durability from -40F to +180F. It meets or exceeds military chemical testing standards. The one-piece steel feed lips won't bend, crack, or deform under sustained use or extended storage, and the whole magazine is built to the same standards as military and law enforcement gear.
The L5AWM works with AR-15s, M4s, M16s, SCAR16, HK416, ARX160, SIG556, ACR, IWI Tavor, SA80, and other modern AR-pattern platforms. It's designed for 300 Blackout but will function in any 5.56 NATO rifle as well.
| UPC | 738435619473 |
|---|---|
| Manufacturer | |
| Manufacturer Part Number | 999-000-4280-02 |
| Caliber/Gauge | .300 AAC Blackout |
| Capacity | 20 |
| Length | 10.6000 |
| State Restriction (CA) | NO DIRECT SHIP TO CALIFORNIA |
| State Restriction (RI) | NO DIRECT SHIP TO RHODE ISLAND |
| State Restriction (WA) | NO DIRECT SHIP TO WASHINGTON |
| State Restriction (IL) | NO SALE TO ILLINOIS PICA |
| State Restriction (OR) | NO SALE TO OREGON |
| Color | Translucent Smoke |
| Product Type | Magazine |
| Model |
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