DA-20009 View cart “Daniel Defense M4A1 Rail Interface System II, 9″ Rail Mid, Black” 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 STOCKDaniel Defense M4A1 Rail Interface System II, 9″ Rail Mid, Black $410.49 Original price was: $410.49.$369.44Current price is: $369.44. Add to cart