Ok, I bought this stuff on an impulse buy and I'm not going to use it. Completely new. I have the C1 buttstock with buffer, tube, spring and everything, the Ergo grip, and the C5 handguards. I have decided that Brasspile needs to do up an Urban scheme on my FN SPR, so I need to get the $$ together. I'll take $110 shipped for the Cav set (paid $153 just two weeks ago!). Thanks!