I some parts left over after building the Grendel that I want. 24 inch heavy overwatch barrel, Alexander Arms flat top upper (no sights), ventilated free float tube type handguard, adjustable gas tube (no gas block) for $375.00 plus actual shipping. The barrel is threaded 5/8x24 for a muzzle brake. I have a WCI brake that I would negotiate with the buyer for if it is desired. To complete this upper, it would need a .825 gas block, charging handle, bolt and bolt carrier. There currently are no sights on this unit. There are between 400 and 600 rounds through this barrel. After I decided I would be doing more practical rifle than 600 yard high power type shooting, I went with a shorter Grendel model. That is why I have these parts left over. I'm in the Portland metro area if anyone wants to look at this unit. No trades. I'll try and post up some photos later today. I now have 11 photos I can send to interested people. I don't have the ability to load the photos onto this web site, but if you send me an email asking for them, I'll forward a copy of the photos to you. ITEM IS SOLD 08 Sep 2010.