Cart “Piston Spring” has been added to your cart. Continue shopping Remove item Product Price Quantity Subtotal Remove MRP-L M-LOK® 9.25" "HYBRID" UPPER RECEIVER $1,045.00 Increase quantity MRP-L M-LOK® 9.25" "HYBRID" UPPER RECEIVER quantity Decrease quantity $1,045.00 Remove Piston Spring $11.20 Increase quantity Piston Spring quantity Decrease quantity $11.20 Coupon: Apply Update cart Subtotal $1,056.20 Shipment Shipping costs are calculated during checkout. Total $1,056.20 Proceed to checkout