

As the name implies, a two-piece handguard comprises two halves, which meet together at the barrel nut and front sight bus / gas block, clamping together around the barrel and gas tube. Q: What is a drop-in or two-piece handguard?Ī: This is the original handguard design found on commercial AR-15s, adopted directly from service-issued M4s and M16s.

Is M-LOK better than KeyMod? Does a Picatinny rail still have its place on a modern AR-15? What's the difference between a drop-in handguard and a free-float unit? Let's clear it all up. With so many handguards available on the AR parts market, picking the right one can get a little confusing.
