https://www.midwayusa.com/promo/free-shipping-2018anniv

*Make sure to check the shipping before finalizing the order because anything more than a pound or two goes back to full shipping price.
(I think, at a certain weight/size the flat rate kicks in then the free ship coupon "turns off" and you end up paying full shipping prices.)

What Products are Excluded?
Out of stock products, products with quantity limits, Guns, Large/Irregular products, Extra-Large/Irregular products, products weighing more than 10 lbs, products that ship separately from the manufacturer or products that ship separately from MidwayUSA are excluded.

Extended to 6/20/18.