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AR Uppers

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Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/16/2010 at 09:53
SVT_Tactical View Drop Down
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Chief Sackscratch

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Couple of questions I know some of you guys that know more on ARs will know.  How hard is it to put together an AR upper?  I have done a lower and some aspects of an upper but never specifically the barrel, and this is what I am wondering about most. As far as headspacing goes is it difficult?  Also If i buy a completed upper with a barrel already installed and it doesn't come with a bolt or carrier, is it as simple as buy any one and putting it together? 

I am looking at two options - one is do a complete upper build from parts I have and purchasing a few others that i need and the other is to buy a completed upper minus the bolt and carrier.  Not looking for a SUBMOA gun but just a plinker.



Edited by SVT_Tactical - April/16/2010 at 09:55
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/16/2010 at 10:49
Dale Clifford View Drop Down
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no need, the barrels are already headspaced with the bolt dimensions, it remains for you to install the barrel assembly (torque down), gas tube, gas block and guards. Brownells has a dvd you can get and all the tools. Bolts, and carriers are even easier. have fun!
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/16/2010 at 11:04
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Chief Sackscratch

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Thanks dale.

Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/16/2010 at 11:11
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As long as you have a barrel nut wrench, torque wrench, vise, and receiver vice block, all of which you can purchase for not too much money, it is very easy.  Buy the stripped upper receiver, bolt carrier/bolt assy, charging handle, barrel, barrel nut (or barrel nut, delta ring spring, etc., depending on whether you want a traditional or free float hand guard) hand guard assy, gas block, and gas tube you want.  Then, put the receiver in a vise with the vice block, slide the barrel extension into the receiver, and tighten the barrel nut to manufacturer's torque spec.  Then install your hand guard, gas block, gas tube and flash suppressor/brake (if applicable).
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/16/2010 at 11:17
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Personally I would still get a "field gauge" to check the head space.  Yes it is unlikely that head space will be an issue but it is still recommended by all the armorers that I have talked to to check that when you assemble them as it is always possible that the barrel chamberer messed up and cut the chamber to deep or not deep enough.  I also check my ARs periodically with to make sure things have not changed with throat erosion.  You have to take the ejector out to do that so you would need a tool that allows you to do that.  

Edited by supertool73 - April/16/2010 at 11:20
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/16/2010 at 11:35
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AR type rifles are exceptionally easy to work on. They were designed for that ease, being a combat type rifle. The bolt is easily taken apart, as is the majority of the rifle itself. As was mentioned, taking apart the major assemblies requires tools that are easily obtained, and in some instances, can be replaced by something you may have already. Having a headspace tool should be a definite need, just to be sure kinda thing.
They are a joy to shoot, and work on as well. I was warned that they are addictive, and I will pass that warning on to you. 
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/16/2010 at 11:38
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Chief Sackscratch

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I have a few AR's now and have built 3 lowers but never tackled building the uppers.  Think i am gonna go ahead and do it.
Post Options Post Options   Thanks (0) Thanks(0)     Back to Top Direct Link To This Post Posted: April/16/2010 at 11:41
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Excellent!!!! Enjoy.
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