As an expert in firearms and accessories, I can tell you that the Magpul M-LOK, pronounced "em-lock," is a modular mounting system developed by Magpul Industries. It is designed to provide a versatile and lightweight method for attaching various accessories to firearms, particularly rifles. The M-LOK system uses a series of slots, or "slots" as they are often referred to, that run along the sides of the handguard or other parts of the firearm. These slots allow for the easy attachment of a wide variety of M-LOK compatible accessories, such as hand stops, lights, and lasers, without the need for additional mounting rails or extensive modifications to the firearm.
The M-LOK system has gained popularity due to its ease of use, modularity, and the ability to customize the firearm to the user's specific needs. It is often preferred over the older Picatinny rail system because it is lighter and less bulky, which can be a significant advantage in tactical situations or for those who value the aesthetics of a streamlined firearm.
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