CartClick-Click-Boom2019-02-02T03:40:15-06:00 Continue shopping “New Frontier AR-15 16″ Heavy Barrel .300 Blackout 1:8 Twist Threaded 5/8×24 TPI M4 Feed Ramps Black Finish” has been added to your cart. Product Price Quantity Subtotal New Frontier AR-15 16" Heavy Barrel .300 Blackout 1:8 Twist Threaded 5/8x24 TPI M4 Feed Ramps Black Finish $199.99 - + $199.99 Apply coupon Update cart Cart totals Subtotal $199.99 Shipping costs are calculated during checkout. Total $199.99 Proceed to checkout