CartClick-Click-Boom2019-02-02T03:40:15-06:00 Continue shopping “AR-15 / M400 / M4 .300 BLK Barrel – 16 Inch Carbine Barrel” has been added to your cart. Product Price Quantity Subtotal AR-15 / M400 / M4 .300 BLK Barrel - 16 Inch Carbine Barrel $269.99 - + $269.99 Apply coupon Update cart Cart totals Subtotal $269.99 Shipping costs are calculated during checkout. Total $269.99 Proceed to checkout