For sale is a SOG Armory Crusader AR-15 with a SOG lower and Colt Upper. I have done a lot of work to this rifle and made many upgrades:

Magpul CTR stock with MILSPEC buffer tube
Magpul enhanced rubber butt-pad on stock
Vortex StrikeFire II Red Dot sight
Vortex 3x magnifier that pulls off to the side if you want to just use the red dot
Aero Precision full length keymod hand guard
Aero Precision low profile gas block with new gas tube
Magpul Angled fore rip
Bravo Company keymod vertical fore grip
Bravo Company Gunfighter charging handle
Troy Industries flip up front iron sight
SOG Armory flip up rear iron sight
Single point sling included
Tactical rifle bag included
Three MagPul PMAGS included
Original Troy Industries 6" quad rail included
Original A2 style front iron sight included in case you want to swap in the original quad rail and front iron sight.

Asking $1,800, no trades. Will send pictures upon request. I've performed all the upgrades above (the Vortex optics alone sell for $400 new). Iíve also had a licensed gunsmith inspect the gun recently.

I have a PDF of the original listing where it was bought new and has all the specs. I can also send more detailed photos upon request.

Will accept cash or PayPal (easy and free). Transaction will include a signed bill of sale.

Link to photo album: SOG AR-15 - Album on Imgur