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Old October 23, 2018, 09:15   #1
kansas boy
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Heavy Barrel Muzzle Diameter?

I saw an Izzy heavy barrel in the MP yesterday and it got me thinking about a suppressed FAL project.

What is the diameter of a heavy barrel from the gas block to the muzzle? Any taper?
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Old October 24, 2018, 05:06   #2
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I saw an Izzy heavy barrel in the MP yesterday and it got me thinking about a suppressed FAL project.

What is the diameter of a heavy barrel from the gas block to the muzzle? Any taper?
No taper that I recall from memory, however, I will take measurements when I get home from work and post results here.

ETA: Dia. just forward of gas block, and just aft of muzzle threads, both are 0.7425". Took a few different measurements, with no appreciable difference.
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Last edited by The Chief; October 24, 2018 at 07:14.
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Old October 24, 2018, 09:42   #3
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Thanks Capt!

Heavy barrels should make perfect candidates for shortening and rethreading then.

Is the length from the chamber to the gas block the same as a standard barrel?
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Old October 24, 2018, 14:50   #4
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Thanks Capt!

Heavy barrels should make perfect candidates for shortening and rethreading then.

Is the length from the chamber to the gas block the same as a standard barrel?
Very welcome! On that chamber-to-GB distance, I would say the Israeli is about a 1/4" longer than 'standard' FAL. You will need to be sure you get the correct length gas piston, also.
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Old October 24, 2018, 15:25   #5
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Ahh, great point. I hadn't thought of that.

So I'd need: Heavy barrel, HB piston, gas tube (unless you use a short or cut one) and some HB hand guards. Do HB front sights require a tall rear?

Thanks for the HB lesson Capt
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Old October 24, 2018, 18:56   #6
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And an Izzy gas plug as well I think.
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Old October 24, 2018, 21:05   #7
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Israeli Heavy Barrel parts

The Israeli heavy barrel GAS tube and GAS piston are LONGER than the Metric or inch pattern parts and yes you need a Israeli tall 700 Meter rear sight for the Israeli Heavy barrel FAL.
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Old October 24, 2018, 21:55   #8
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Thanks for all the good input guys.

I think this may get way more expensive than I had planned. It would be nice to have a short, heavy barrel to hang the suppressor from, but it sounds like buying a complete HB kit would now be in order.

I'm going to search the Files for suppressed FALs and see what I can learn.
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