I've had a great time building AR. I've built them in 5.56, 223 Wylde. 300 Blackout and .277 Wolverine, but never a big bore. So I have decided to go big on my next build. The rifle's not going to be a range toy so cost of ammo will not be a big factor. After doing some homework I have decided on the 458 Socom. Here is what I have on order right now. Anderson 458 Socom stripped upper. Brownell's 458 Socom BCG. XXTreme Cryo Treated heavy barrel. Davidson Defense Ultimate Ar-15 Flat Wire Recoil Buffer Spring. 5 0z. heavy buffer LaRue MBT trigger. A friend has offered to make me a muzzle break. I plan to use a milspec Anderson lower, but haven't decide on the butt stock. I also plane to handload for it. So for those of y'all that have big bore AR, any input would be welcome.