.40 upper?

[sburd357]

Hola,
I have a PSA PX-9, AR9 9mm pistol that is set for Glock mags. PSA does not make a .40 upper and that is what I am looking for. Does anyone know of an upper that will work with the PSA lower?

I have a PSA lower (Glock Magazines) that works fine with an upper I built using KVP 40 S&W barrel. These barrels are on sale at Job Bob Outfitters for $80 right now. I mounted it in a $40 slick side Anderson upper and used a $45 Double Star Carbine length float tube.
Utterly reliable using the KVP 40 BCG from Joe Bob's though I always polish the feed cone on Blow Back barrels prior to installation.

If you don't want to build an upper then Stern Defense would be my choice. There BCG should work even better because it is an ounce heavier than the KVP BCG. I added the KAK tungsten weight to my KVP BCG which brings the weight up to 16.5oz and helps mitigate recoil.