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AR15.COM
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10/23/2008 2:32:59 PM EDT
I am trying to find a complete upper in a specific configuration and am having little luck getting any guidance from manufacturers/vendors so I am thinking of just doing it myself from parts.  

I wanna make sure I get everything I need.  

Can somebody tell me if I'm missing anything?  

Upper Receiver w/forward assist and port door
Bolt Carrier Group
Charging Handle
Barrel w/flash hider
Handguards

Any guidance on tools would be greatly appreciated as well too.

TIA

10/23/2008 2:40:13 PM EDT
[#1]
You'll also need a delta ring, snap ring, gas tube and roll pin, handguard retaining cap, and gas block if the barrel doesn't come with one.

Tools needed:

Vise
Action block
Armorer's wrench
Torque wrench

Punch set and hammer.
10/23/2008 2:41:40 PM EDT
[#2]
You will need a gas tube. Make sure you get the proper length.  Read this page. The section "Changing your own AR15 barrel for dummies" will be helpful.
10/23/2008 3:57:23 PM EDT
[#3]
del ton has nice build to suite kits on their site.
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