AIA (Australian International Arms ) barrel thickness question ?

[Florey55]

Hi fellow enthusiasts,

After buying a second-hand, and very lightly used, AIA (Australian International Arms) M10 No. 4 about a year ago, and being very delighted with it, (the first picture)..

then, after seeing this NIB / unfired B3 pop up for sale a couple of weeks ago, I pounced on it....

I know that I paid too much for it, but I have never ever seen one come up for sale before. (the second picture)

Refreshing your memory, the limited edition B3 (150 units which were sold in an heartbeat ) is fitted with a tapered bore barrel from a GE 134 mini-gun and is rated for 100,000 + rounds life.

My question is, which AIA model has the thickest barrel? The B2 or the B3?

The B2 is the third picture.

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[bros]

The B2 match has the largest diameter barrel.

Hi fellow enthusiasts,

After buying a second-hand, and very lightly used, AIA (Australian International Arms) M10 No. 4 about a year ago, and being very delighted with it, (the first picture)..

then, after seeing this NIB / unfired B3 pop up for sale a couple of weeks ago, I pounced on it....

I know that I paid too much for it, but I have never ever seen one come up for sale before. (the second picture)

Refreshing your memory, the limited edition B3 (150 units which were sold in an heartbeat ) is fitted with a tapered bore barrel from a GE 134 mini-gun and is rated for 100,000 + rounds life.

My question is, which AIA model has the thickest barrel? The B2 or the B3?

The B2 is the third picture.

[limpetmine]

Nice rifles and never seen in the US. A few of the 7.62x39's made it in before the Vietnamese Teak wood got them the banhammer.
You don't happen to know any production numbers for that one, do you?
Thanks,