Which lowers will work with a Colt 6520 Upper?

[dodging230grainers]

Not sure if this is a dumb question or not.....

Since the Colt pins are different sized than most Upper/Lower takedown pins, how would I mate a Colt upper with say a LMT lower, or a Bushmaster lower? Is it possible?

 

[dodging230grainers]

Nvm. I found out the new colts have standard pins.

Also,

To have a complete LMT carbine, I would just need to buy this upper:

http://dynamicarmament.com/items/ar...pper-1-7-twist-f-5-6c7-cb-sf-x-xxx-detail.htm

And this lower:

http://dynamicarmament.com/items/ar...tcompletelowerstandardstocktrigger-detail.htm

Now I have myself a complete LMT Carbine that is on par with Colt, right?