I have been looking for a good M4 profile upper for about a week now, I noticed almost right away everyone was out of stock on 16 inch m4 profile uppers. I just was looking again today and seen that Del-Ton has there uppers back in stock I picked up the 16inch m4 with 1/7 twist crome lined with the flat top upper / true M4 feedramps it was like 20 buck more. From what I hear delton make some good stuff and I have not heard anything bad. That's for sure. So anyway just wondering how you like yours if you own one. I like the fact you can build your own rifle. I have a Armalite HBAR right now and I just wanted somthing liter foe my next build. Anyway if you own a upper from them just let me know how you like it. Thanks