i just took a look at that--
i think they were without a bolt carrier for $309 --can't really tell cause their OOS right now.
but $309+$80 for their M-16 carrier is still a good deal in my book.
they have their LPKs on sale for $49
since all there is to a KIT is a upper with BCG, a stock and a LPK one should be able to make a decent kit with lots of mall-ninja spec stuff for reasonable cash from PSA--