Cart Remove item Product Price Quantity Subtotal Remove M4 GEN II Buttstock $88.70 Increase quantity M4 GEN II Buttstock quantity Decrease quantity $88.70 Remove PDW Buttstock Kit $560.50 Increase quantity PDW Buttstock Kit quantity Decrease quantity $560.50 Coupon: Apply Update cart Subtotal $649.20 Shipment Shipping costs are calculated during checkout. Total $649.20 Proceed to checkout