Made in the USA, the MOE SL Hand Guard for AR15/M4 firearms with carbine-length gas system and A2 front sight provides modular flexibility with M-LOK accessory slots in a lightweight, sleek, cost effective design. Reinforced, heat-resistant polymer construction provides operational durability without the weight and expense of an aluminum rail hand guard, integral riveted aluminum heat shield. M-LOK slots at the two, six and ten o'clock positions allow the attachment of optional Picatinny rail sections and other direct attach M-LOK accessories for the mounting of tactical lights, slings, grips, etc. A large front extension and lower lip protects the user from the hot front sight assembly and maximizes useable hand guard length. Easy to install utilizing existing delta ring and round front hand guard retaining cap with A2 front sight assembly*. Note- the MOE SL Hand Guard Carbine-Length is a direct replacement for M4 Carbine-type plastic, two-piece hand guards and utilizes the existing round front hand guard retaining cap and rear spring-loaded delta ring. Not compatible with piston operated AR platforms. Must be used with the triangular A2 front sight assembly, other gas blocks are not compatible. Factory sling swivel is not compatible and, if equipped, must be removed from the A2 front sight assembly.