Hi I am building my first AR and don't know which upper would be better. I have narrowed it down to these four. Any advice would be great. Thanks. Here are my options:
"1)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.
2)Daniel Defense 16 inch Cold Hammer Forged barrel installed on a CMT Flat Top receiver. 5.56 chrome lined bore and chamber, 1/7 twist, F marked front sight, A2 flash hider, M4 ramped extension and receiver. Standard handguards.
Includes high quality, Bolt carrier assembly and forged charging handle.
$565----it is $65 less for a non hammer forged barrel
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
4) BCM Standard 16" M4 Carbine Upper Receiver Group
$570 with bcg