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Shotgun front post sight


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Old 08-03-2015, 09:58 PM   #1
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Default Shotgun front post sight

I would like to install front optic sights on three shotguns.
Do they unscrew? I see that several companies sell optic sights with threads.
I want to install one on a Browning BPS, an Italian DB and a Spanish O/U.
Are all the threads the same?

Thanks for for your help!
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Old 08-03-2015, 10:45 PM   #2
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http://www.outdoorlife.com/blogs/gun-shots/2012/04/why-shotguns-and-fiber-optics-donít-mix
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Old 08-03-2015, 11:58 PM   #3
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That doesn't answer my question.
I want to install a fiber optic sight.
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Old 08-04-2015, 12:24 AM   #4
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Yes they Almost always unscrew. No they are not all the same thread. If you get one that does screw in they are always long and have to be cut off and polished to match the inside of the barrel.
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Old 08-04-2015, 12:37 AM   #5
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Quote:
Originally Posted by hiwall View Post
Yes they Almost always unscrew. No they are not all the same thread. If you get one that does screw in they are always long and have to be cut off and polished to match the inside of the barrel.
This is only true for a shotgun without a rib, and all the ones he listed (almost) surely do have a rib.
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Old 08-04-2015, 03:14 AM   #6
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Yes all have Ventilated Ribs.
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Old 08-04-2015, 04:08 AM   #7
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Quote:
Originally Posted by Virginian View Post
This is only true for a shotgun without a rib, and all the ones he listed (almost) surely do have a rib.
Thank you. I knew that of course but did not think of it when I did that quick reply to the OP's question. In some cases the threaded shank might still have to be shortened but tou would not have to be concerned about it protuding into the barrel like on rib-less guns.
hrobalabama1 the thread size you could likely look up on the web for the Browning but the others might not be so easy. Many US makers used 3-56 thread size but there are many that use other sizes.
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Old 08-04-2015, 02:52 PM   #8
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Thanks for your reply. That's the info I need.
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Old 08-05-2015, 12:12 AM   #9
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These might work better for you, as they are magnetic, so they can be taken off when not needed and the pipe can be swapped for different lighting conditions.

http://www.amazon.com/Allen-Company-Front-Shotgun-Sight/dp/B002L98JOW/ref=sr_1_2?ie=UTF8&qid=1438733375&sr=8-2&keywords=shotgun+fiber+optic

And for those out there with plain barrels:

http://www.amazon.com/Truglo-Defense-Fiber-Optic-12-20Ga/dp/B004Z5BY3S/ref=sr_1_1?ie=UTF8&qid=1438733375&sr=8-1&keywords=shotgun+fiber+optic
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Old 08-05-2015, 02:11 AM   #10
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Since I couldn't convince you otherwise, read the directions for this product. It might answer a 'how to' that's actually useful.

http://vi.raptor.ebaydesc.com/ws/eBayISAPI.dll?ViewItemDescV4&item=201226838071&cat egory=310&pm=1&ds=0&t=1438740643013

It comes with threaded post options that the top part the screws into, thus fitting many guns.
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