Full length top Picatinny rail; Ergonomic pistol grip with finger grooves; Free floats any barrel contour including bull barrels; Easily installs with a drop-in fit that requires no gunsmithing; Makes your Ruger Charger mimic the look and feel of an M-4 style pistol with no buffer tube; Constructed of ProMag's legendary high strength, carbon fiber and glass reinforced black polymer; Forend sides slotted for addition of optional Picatinny rails; Picatinny rail runs the length of the bottom of the forend; Rear mounted sling swivel stud; Locking pistol grip storage compartment