A handguard that attaches only to the receiver of an AR-15 platform rifle, leaving the barrel completely free-floating, offers several advantages, especially when used with a fixed front sight base like the A2. This design prevents the handguard from contacting the barrel, eliminating pressure points that can affect accuracy. For example, forces exerted on the handguard during shooting or carrying, such as resting the rifle on a support, will not transfer to the barrel and induce unwanted barrel harmonics or shifts in point of impact.
The enhanced accuracy achieved through this separation is highly valued by target shooters and tactical marksmen. Historically, traditional handguards clamped directly to the barrel, potentially causing slight deviations in trajectory based on handguard pressure. The development and adoption of free-floating systems represent a significant improvement in rifle accuracy and customization, allowing for the addition of accessories without impacting barrel harmonics. This advancement was particularly relevant with the increasing popularity of optical sights and other attachments on modern sporting rifles.
