In October of 2012 my best friend had purchased a base level AR-15 a DPMS Oracle 5.56 (not a great rifle I know) he had it a very short time and decided he didn't like AR-15s at all so he was trying to off load it quick to recoop some money he had purchased a vortex strike fire and extra mags for it, sadly he had paid $900 for the bare rifle so he had near $1200 tied up in the rifle.
I felt kinda sorry for him seeing how much he disliked the AR platform so I offered to buy the AR for $800 with the extras as I knew the rifle was worth around $650 and extras about $180 we set up a payment plan as ididnt had the funds to dish out $800 at the time.
Over a 4 month span my friend requested my assistance with numerous tasks always taking chunks of money off my "bill" for helping him in the end I paid him about 300 cash and rest was taken off over time for helping him, So essentially a 300 rifle for me even a DPMS Oracle is well worth that.
Over the last year I have replaced most everything inside and out I took my time researched a lot received a lot of help from members here with their vast knowledge (much appreciated) so here's what I put into it
ALG ACT trigger-$65
Jp reduced power springs-$15
Kns anti rotation pins mod 2-$30
Magpul B.A.D. lever-$25
UTG Ergo grip with storage-Free
BCM H buffer-$25
Damage industries buffer spring-$10
Promag buffer plate w/ ambi loops-$10
Magpul ACS stock-$100
Spikes tactical M16 FA BCG-$110
BCM Gunfighter large latch CH-$45
Troy fixed M4 front sight-$55
Troy fixed Di-optic rear sight-$65
UTG drop in quad rail-Free
MFT React VFG-$20
Yankee hill phantom 5C1-$25
Stag arms lo pro gas block-$35
Rainier arms evolution 12in rail-$180 (this is replacing the quad rail)
(The Rainier evolution and stag gas block will be ordered next week)
That is $815 total plus 300 in the gun recently sold original parts for $150 so total into rifle is $965 not the easiest way to "build" a rifle I know but I'm pretty happy with what it has become a lot of quality part in it and on it now and is quite an accurate rifle aswell.