Welcome Steve! I have a PA10 as well. I bought an upper assembly. If I could do it again, I'da bought a stripped upper and pieced it together and saved a few dollars. I have a Diamondhead VRS-T handguard on mine along with a Faxon 16" pencil .308. The PA-10 uses a "low" DPMS LR-308 pattern HG. I'm very pleased with the finished product. The 18" nitride that came with it shot great (.7 moa) but was too heavy for my liking, 2.75lbs. The Faxon is 1.78Lb.