I picked this one up at a gun shop in Dec. 08 and have been upgrading it and shooting it ever since.
It had a 20" Hbar with a UTG quad rail when I bought it. I quickly replaced those with regular hanguards and some goodies.
Sorry about the crappy pics, one was taken with my camcorder and the other two with disposable cameras. (Too cheap to buy a digital)
It wasn't long before I ordered an m4 upper assembly from Bushmaster along with some other upgrades.
I have about 2k rounds through this rifle allready. The only problems i've had with it was after I put in a BCM auto bolt carrier I started to get alot of FTE and eventually I just put the stock Bushy bolt carrier with a BCM extractor upgrade back in and haven't had problems with it since. I shot over 500 rounds at an Appleseed shoot this past weekend with it and it ran like a champ.
Heres the breakdown.
Bushmaster XM15-E2S lower
Bushmaster m4 16" upper
DD 7.0 Omega rail
BCM mil spec receiver extension
Magpul Moe stock
Tango down stubby VFG
Eotech 512
YHM buis