Would like your input on a lightweight upper for coyote hunting.  I will be using a red dot so I need a flat top in a 16" barrel with an aluminum or carbon fiber float tube with gas block.  (want it to be as light as I can)

Thanks in advance.

V.Muth

Mid-length RRA from ADCO turned down under the handguards. Might be up over $500 a bit though.

Here's what I put together (I'll be using it for coyote hunting too, coinidentally)
Sabre Defence Gov't profile, mid-length, chrome-lined, 1/7 twist barrel- $285 shipped- Talon Arms
CMT M4 cut upper- $99- Bravo Company
CMT Bolt/Carrier/ Charging handle- $140 (can be found much cheaper as a package)- Bravo Company
RRA OD Hand guards- $23.50- ADCO
ARMS #40 BUIS- $100 shipped- ADCO

Just a little under $650. This upper could be put together for under $500 If you could skip the hand guards, BUIS, and find a better deal on the B/C/CH. An aluminum FF tube is pretty cheap too. I don't know if Talon Arms could swap a railed gas block on there or not, though.

Hope this helps a little.

WIZZO

look for used bushmaster superlight uppers, model1 also offers one or was it m&a?. or look for a colt 6520 upper.

Pick up a LW SS barrel, drop it on a CMT upper and ignore the irons if its only for 4 legged beasts and you are trying to stay cheap.  

Here are some links to some lightweight uppers or components.

www.eaglefirearms.net/ef_upper_assy.htm#5.56mm%20UppersThird one down.

www.del-ton.com/detail.aspx?ID=599  If you're wanting to build your own.