As an expert in firearms and ammunition, I can tell you that the
M-LOK (Modular Lightweight
Rail) system is a method of attaching accessories to small arms such as rifles, carbines, and shotguns. It was developed by Magpul as an alternative to the existing Picatinny rail system, which is often used for mounting tactical accessories like scopes, lights, and foregrips.
The M-LOK system uses a series of slots or "slots" that are cut into the handguard or rail of the firearm. These slots allow for the direct attachment of accessories using M-LOK-compatible mounting hardware. The key benefits of the M-LOK system include its lightweight design, which can help reduce the overall weight of the firearm, and its modularity, which allows users to customize their firearms with a wide range of accessories without the need for permanent modifications.
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