Vendetta,
You certainly have this priced to sell quickly. Due to a bad shoulder I gave up my M-4 about 6 months ago. Are you a member of Gunbroker? Due to wanting to give the members here a chance at buying at a lower price, I usually post items here and take them down within a week. I then put them up on Gunbroker if they are still available and get bites within hours at the same price I lest here.
I am telling you this to urge you not to negotiate too much until you try the much larger audience at Gunbroker.
By forum rules, you can't post in both places.