New fire control pack with a 5-6lb trigger; Forearm with picatinny rails at the 3, 6 and 9 o'clock positions with removable rail covers; Relocation of the charging handle closer to your center mass; Modular Tavor style pistol grip; Unparalleled dexterity without the loss of bullet velocity; Can also be changed out with a separate purchase of conversion kits to shoot 9mm and .300 Blackout; Perfect for anyone looking to have an accurate, modular, reliable, and agile rifle system all on one platform