6.8 upper for $279.95 at PSA- today only

[brandon01rt]

I have a group buy LPK/receiver from PSA. I ordered a 16" 6.8 spcII upper from PSA.

Where do I need to look for affordable 6.8 parts? Im trying to keep the build under $600 before optics. That being said, I want it to cycle properly and operate safely. So If I need to throw some more money at it I don't mind.

I already researched magazines and decided Ill stick with PRI waffle mags. Any input is highly appreciated.

http://palmettostatearmory.com/index.php/ar-15-05/labor-day-ar15-parts-sale/psa-classic-premium-m4-stock-kit-black.html

http://palmettostatearmory.com/index.php/ar-15-05/labor-day-ar15-parts-sale/ar15-m16-charging-handle.html

http://www.stagarms.com/product_info.php?cPath=16_25&products_id=228

http://www.midwayusa.com/find?sortby=1&itemsperpage=20&newcategorydimensionid=15446&