So Im tired of waiting for the MPX and want something in the meantime for 9mm…
I was thinking about getting one of the PSA 9mm build kits without the lower. I want to use glock mags so I was also going to get the QC10 glock lower. Will this combo work? Only thing I see mentioned by QC10 is that is requires a bolt cut for glock mags, and the PSA one is for colt mags I believe. What are my options for this little problem?

It will work . Alhough I think I would piece my build together. I don't think the bcg from psa is ramped.
If using a standard lower I would grab this adapter
amm arms (spikes copy)
jse uppers come with ramped cmmg bolts
jse 9mm page
Grab a heavy buffer, I have a slash 9Q, I have a heavy spring too, but don't use it, I probably would if I used a suppresor.
Get brownells branded metalform's, best mag out there for colt pattern
On sale now

I don't have any experience with qc10 lowers so I'm no help there.
For the money I bet you could be into one of the new CZ EVO if that floats your boat. There's a long thread here and some video's on the net about it

*Edit*  forgot to mention lone wolf and I think adco will cut your bolt to use glock mags.

You'll get more info & feed back over here. AFTER you read the FAQ's. It's geared for the AR specific uppers / lowers in pistol calibers.
http://www.ar15.com/forums/f_3/15_Rimfire_and_Pistol_Calibers.html

thanks

Sorry, I know this thread is a little old, but if you're still looking at a 9mm AR build:

QCircle10 Glock lower
VLTOR upper
QCircle10 4" barrel
JP Enterprises bolt carrier group and captured silent spring
Samson key mod 9" free float

Looks great!

What can are you running?

Here is mine built off a PSA lower using a HAHN block.

That's an AAC TiRant 45. The TiRant 9 that will live on it permanently is still in NFA jail.

Here it is in the wild: