Hi I am building my first AR and don't know which upper would be better. I have narrowed it down to these three. Any advice would be great. Thanks. Here are my options:
1)The Daniel Defense DDM4 complete upper receiver groups come complete with, 16″ Cold Hammer Forged Barrel, and Omega X 12.0 FSP Rail System.
# Upper Receiver: A4 Upper Receiver with M4 Feed Ramps
# Barrel Characteristics: 16″ Cold Hammer Forged, 5.56 NATO Chamber, 1:7 Twist, Chrome Lined, Mil Spec Heavy Phosphate Coated, HP and MPI tested
# Complete Upper Weight: 4 lbs 8 ozs
# Bolt Carrier Group: F/A BCG, HP and MPI Tested, Shot Peened Bolt, Extractor Booster, Properly Staked Gas Key
# Flash Hider: A2 Bird Cage Flash Hider
# Rail System: Omega X 12.0 FSP
--Can I take off the front sight and put on a flip down if I want
Our Price: each $650.00
2)Here is quite a package. This well balance low profile designed upper. Daniel Defense 16 inch M4 barrel, 4150 steel, installed on a CMT Flat Top receiver. 5.56 chrome lined bore and chamber, 1/7 twist, M4 ramped extension and receiver. The forend is a Yankee Hill 7 Inch Diamond Quad Rail. Yankee Hill Machine FLIP UP FRONT SIGHT with bayonet lug and A2 flash hider.
Includes RRA Bolt carrier assembly and forged charging handle.
$650"
3) BCM Standard 16" M4 Carbine Upper Receiver Group
http://www.bravocompanyusa.com/BCM-M...-urg-m4-16.htm
$570 with bcg
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