AR0901C View cart “Rock River Arms Complete Lower Half, 5.56/223 Standard Trigger, CAR Stock” has been added to your cart. Showing the single result Default sorting Sort by popularity Sort by average rating Sort by latest Sort by price: low to high Sort by price: high to low Sale! IN STOCKRock River Arms Complete Lower Half, 5.56/223 Standard Trigger, CAR Stock $274.85 Original price was: $274.85.$247.37Current price is: $247.37. Add to cart