The barrel is thick enough to make a descent shoulder so I'm going to chop, crown, thread it. I just don't know what length I want to do yet. It measures 0.715 in front of the gas block. I forgot mine when I went to the shop yesterday to measure the gas port. I have the machined pins so I can confirm your drill bit measurement.
Edit: the rear of the barrel measures from as a taper and isn't as thick as an AAC 9" barrel.
AAC manufactured 16" AR barrels
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Re: AAC manufactured 16" AR barrels
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Re: AAC manufactured 16" AR barrels
0.81 is the correct size. It was very very tight on the pin when I checked it this afternoon, there is no drill bit to drill 0.80 and 2.5mm makes a 0.82 hole.
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Re: AAC manufactured 16" AR barrels
The gas post size of the AAC 16 inch carbine gas barrel is not too large. In fact you need to use a C buffer with it as it is.A-Game wrote:I wish my carbine gas 16" barrel had a gas port of 0.82, if it did I could open it up a tenth or so. Instead it is too large and I am contemplating selling the barrel or just tacking the hole and drill the size I want. I might do that anyway
Actually, I think I'll do that Friday morning before the range session and see if it will cycle the two types of subs I have and lock back the bolt.
Re: AAC manufactured 16" AR barrels
It is already the correct size. Don't open it - you will just ruin the barrel. The reason your 10 inch has a 0.098 port is because it is a 10 inch barrel. A 16 inch barrel needs a smaller size because it has more dwell time.Netpackrat wrote:I'll be pleased if mine turns out to have pistol gas with an .082" port like yours, so I can open it up until I get the function I want. My current 10" SBR has an .098" port.
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Re: AAC manufactured 16" AR barrels
I agree. I will only open it up if I have the barrel shortened, and it won't function with the smaller port. Not sure what I am going to do with it at this point.300Blk wrote:It is already the correct size. Don't open it - you will just ruin the barrel. The reason your 10 inch has a 0.098 port is because it is a 10 inch barrel. A 16 inch barrel needs a smaller size because it has more dwell time.Netpackrat wrote:I'll be pleased if mine turns out to have pistol gas with an .082" port like yours, so I can open it up until I get the function I want. My current 10" SBR has an .098" port.
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Re: AAC manufactured 16" AR barrels
Dredging this thread back up because I am probably going to do something with this barrel soon. Decided against chopping it, and will be building a 16" gun; just wondering what buffer weight I should try first?
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Re: AAC manufactured 16" AR barrels
I bought 2 of these a while back and am running both at the full 16".
One of them arrived with pistol gas and one has carbine length gas.
I used the heavy buffer for pistol gas standard buffer for carbine gas theory and both function great with subs or supers.
One of them arrived with pistol gas and one has carbine length gas.
I used the heavy buffer for pistol gas standard buffer for carbine gas theory and both function great with subs or supers.
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Re: AAC manufactured 16" AR barrels
Thanks for the reply. Been busy and have not been on the forum in a while.
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