This Arsenal Bulgarian upper and lower handguard set is the one seen on Arsenal's AR-M4SF Special Forces rifle. Manufactured from high-strength reinforced polymer for AKSU-type ("Krinkov") milled receiver rifles, these handguards offer a modern, weather resistant construction. The lower handguard incorporates a flashlight, which emits a very bright glow for outstanding and fast target acquisition. It uses two 3-volt lithium batteries (CR 123 ASL). It also has a steel heat shield and metal insert by mil-spec standards, for decreased heat transfer and maximum user comfort during long shooting sessions. This set will fit any milled receiver AKSU-type rifles and pistols, including Arsenal's SA M-7SFK rifle and SAM7K pistol.