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Free-floating handguards, also referred to as "floating" handguards, have seen a rise in popularity in the recent years. They work by only attaching to the firearm at one point (on the barrel nut by the upper receiver) while the remainder of the handguard does not make contact with the barrel. This gives the impression that the handguard is ...
The M-LOK rail specification included metric dimensions instead of imperial, and utilizes a T-slot nut capable of only 90-degree rotation, reinforced by thread-locking fluid, making it suited for applications on free-floating handguards. It was designed to work with both metal and polymer parts.
A free-floating barrel is a firearm design used in precision rifles, particularly match grade benchrest rifles, to accurize the weapon system. With conventional rifles, the gun barrel rests in contact with the fore-end of the gunstock , sometimes along the whole length.
In firearms, the forearm (also known as the fore-end/forend, handguard or forestock) is a section of a gunstock between the receiver and the muzzle. It is used as a gripping surface to hold the gun steady and is usually made out of heat-insulating material such as wood or reinforced plastic .
Unlike the current M240's solution of minimizing the heat transfer, Barrett uses a free floating handguard system, where they bolted the handguard directly to the receiver of the machine gun, instead of to the gas tube assembly.
SOPMOD Block I Phased Replacements. Daniel Defense M4A1 RIS II (Rail Interface System), GL/SSC RIS II (Grenade Launcher/Sound Suppressor Capable), and MK18 RIS II (with FSP (front sight post) variations) free-float handguards [7] [8] [9] [10]
The front handguard is in this system permanently attached to the upper receiver. The whole system is forged from one piece, and is sometimes called a monolithic rail. This system allows for a completely free floating barrel. Another unique feature is that the system can be adapted for different barrel lengths by screwing on an extension.
The receiver contains the barrel, carry handle with integrated sights, trigger group with pistol grip, handguard and magazine socket. The G36 employs a free-floating barrel, meaning the barrel does not make contact with the handguard. The barrel is fastened to the receiver with a special nut, which can be removed with a wrench.