Ar build

[Dan6726]

Anybody got advice on a barrel install for an ar? I've got everything else finished. Just not sure how to tighten it up. Is this something that needs to be handled by a gunsmith? Any and all advice is greatly appreciated.

 

[Bunk39]

Get an armorers tool, a half in drive torque wrench, and tighten to manufacturers specs. You can do it!!


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[Doug76]

Get an armorers tool, a half in drive torque wrench, and tighten to manufacturers specs. You can do it!!

What he said. And it is very easy.

 

[svilardo_85]

make sure your gas tube is made for what size barrel you use example: carbine length, mid length, and rifle length. make sure that the gas block is made for the type of barrel you use .936 for heavy and .750 for regular. you need a vice to hold upper and a vice block to protect upper so you wont damage it while you install barrel, 1/2 inch drive torque wrench and armorers tool. depending on weather you use a free float or regular hand guard will depend on the armorers tool you use most can install both. if you use a regular hand guard you will need a end cap it goes against the gas block and don't forget the barrel nut and delta ring too there are plenty youtube vids to help you out. you torque barrel 30 pounds to 80 pounds you have much play because you got to line up the notch in the barrel nut/delta ring assembly to where you got clearance for the gas tube to go into upper.then pin tube into block and install over gas port on barrel. as for free floats i have not installed one yet but works the same way in its own way. good luck.

 

[nickcam79]

I changed to a free float rail with a lo pro gas block on my mp15.I had the the correct size punches already and purchases a quality armorers tool.I watched a couple of YouTube videos and did it with no problems. I've prob put 500 or so rounds through the rifle with no problems. I did it without a vice and the proper blocks. To excited to wait ,luckily I didn't have any problems,scratches or breakage .I am in the process of getting the proper block and such.watch a couple vids.and u should do fine.

 

[JWG223]

Geissele Reaction Rod
Aeroshell 33MS
Tighten/Loosen barrel nut 3X
Torque to 50-60 ft-LB if non-indexing. 35-80#, if indexing, I believe is the spec.