The Monstrum Tactical drop-in AR-15 extended quad rail handguard with FSP cutout is a quick and easy install on any carbine length AR-15 rifle platform. It allows for the mounting of tactical accessories such as bipods, flashlights, and sights. The unique forward extension installs in place around your front sight post and provides for added rail space for accessory or hand placement.
Please note that the Extended Carbine Length Quad Rail with FSP Cutout will not fit on Ruger AR-556 model rifles without modification. For more details, please read the following: Quad Rail with A2 FSP Cutout Modified for Ruger AR-556.