The Archangel Yugo Pap AK-series forend is designed for Yugoslavian pattern AK's. Comprising f (4) pieces: a lower hand guard, two (2) upper hand guards (one with integral 12-o'clock Picatinny rail), and an internal steel heat shield; the hand guards are constructed of legendary high strength, carbon fiber and glass reinforced tan polymer. The lower hand guard has a comfortable swell, and is grooved for grip control; the upper hand guards are aggressively grooved allowing a firm grip by the off hand. The forend is suitably ventilated for heat dissipation. Designed for comfort and control. M1913 Picatinny Rail length is 3.75 inches. 922(r) Compliant. Lifetime Warrant Mfg: Pro MagCheck price and Read more Detail At Pro Mag