Good parts for building an AR-15?

I am going to build an AR-15, I don't want to go through the trouble of assembling the kits so i'm planning on just buying the complete upper and lower haves. The lowest price ive seen on a complete lower is from stag arms ($290) are they any good? Are there any lower priced models and would the stag... show more I am going to build an AR-15, I don't want to go through the trouble of assembling the kits so i'm planning on just buying the complete upper and lower haves. The lowest price ive seen on a complete lower is from stag arms ($290) are they any good? Are there any lower priced models and would the stag receivers accept any upper half say from model 1 sales or some other place?
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