I totally understand. I do like the LW barrel better on the Spike's build and the 4 Spike's uppers I have/had all shot well and shot anything.
Sionics is where I will order a complete lower if I need one fast with the VLTOR A5 RE installed.
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Finally got mine finished up. Added my old KAC rail to it. Now I need to get out and do some shooting.
http://i152.photobucket.com/albums/s..._161326139.jpg
That thing is slick IG. Muy Bueno.