55CA379 View cart “CMMG MK4 Pistol Lower Receiver 5.56 NATO” 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 STOCKCMMG MK4 Pistol Lower Receiver 5.56 NATO $282.89 Original price was: $282.89.$254.60Current price is: $254.60. Add to cart