Cart “Piston Spring” has been added to your cart. Continue shopping Remove item Product Price Quantity Subtotal Remove .308 Lower Parts Kit Light $167.00 Increase quantity .308 Lower Parts Kit Light quantity Decrease quantity $167.00 Remove .308 Extension Tube $68.40 Increase quantity .308 Extension Tube quantity Decrease quantity $68.40 Remove PDW Buttstock Kit $560.50 Increase quantity PDW Buttstock Kit quantity Decrease quantity $560.50 Remove Piston Spring $11.20 Increase quantity Piston Spring quantity Decrease quantity $11.20 Coupon: Apply Update cart Subtotal $807.10 Shipment Shipping costs are calculated during checkout. Total $807.10 Proceed to checkout