I purchased the Bulldog 43" tactical case for my 20" AR-10. It is awesome. I'm a test engineer by profession and I inspect and test everything. The construction of this case is excellent, I'd dare say "perfect". It securely houses my rifle and all of its bits, plus my 3" 45 ACP. The front pockets can comfortably accommodate 13 AR-10 mags (4 in each side pocket) but I don't think I want to be adding that extra eight pounds to my carry. The only issue is the triple AR-15 mag pouch with the velcro hook material on the back. This won't work for me. I need a replacement for my AR-10 mags, but I haven't found anything that will work. It looks like I will have to make something. But this is minor. All in all, I am completely satisfied with this case, so much so, that I have just bought a smaller version for my AR-15.