No problem bro! Its just a habit of mine searching for discount codes whenever i shop online on anything. If we are allowed to save money... Y not right? .
Make sure you are have some patience. Spikes leadtime is about 6-10 weeks. Thats what i been told by their customer service about my order which i placed a week ago.
Wait time isn't a big deal to me I guess I'm going to put together my lower first then save to buy my upper... I'm going paycheck to paycheck and tryin to save for bills so I get about 200 per check to put into my ar :/ unfortunetly that means lots of waiting anyway hahaha
The way I understand it, a .223 barrel isn't designed for the greater pressures created by firing a 5.56 round. You can do a .223 round in a 5.56 barrel, but shouldn't do it the other way around. Probably won't blow on the first round, but eventually you'll have issues. When all else fails, check the markings on the barrel if you aren't sure.