DPMS Panther Arms now offers the 6-Rail Free Float Tube, standard and carbine length, for AR rifles. These six-rail handguards feature a 2 3/8-inch diameter, 6,000 series, aluminum, one-piece ...

KeyMod Comes Along Rails were great, but they presented some problems. A short integrated rail section on top of a receiver for a scope base is fine, because where else is a scope going to go? But ...

Despite the context of a short handguard, VFGs proliferated to other configurations like the M16A4, which didn’t have the same handguard real-estate limitations. So, what’s the deal?

Both the M4 and the M16A4 feature “quad” Picatinny rail handguard systems made by Knight’s Armament Company that have remained in use since they were introduced in the early 2000s.

Our evaluation gun featured a quad-rail handguard, however, Ruger has introduced a new model furnished instead with a KeyMod-compatible handguard. The new model weighs 8 ozs. less than the quad ...

It's hard to mount optics to an old-school AK (new ones seem to have more Pic rails integrated into them), but there are ways to retrofit attachment points to get on target quicker.

Rails are also often present on the handguards, where they are used to mount a variety of accessories necessary for the modern soldier: infrared lasers for shooting under night vision, foregrips ...