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Old 08-10-2018, 07:13 PM
SquarePizza SquarePizza is offline
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642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions?  
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Default 642/649 front sight dimensions?

Does anyone know the height and width of the front sight on the pinned 2 1/4 barreled guns?

My 649 has a bigdot sight thats like aiming with a basketball, so I am thinking of ordering a dawson front sight that is closer to the stock dimensions.
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Old 08-10-2018, 10:20 PM
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armorer951 armorer951 is online now
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642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions?  
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Not sure if it's the same, but my 640-1's front sight is .125" wide and .145" high. (pinned sight, same bbl length)
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Old 08-11-2018, 01:19 AM
wrangler5 wrangler5 is offline
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642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions?  
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Same on my 640-1 and 649-3.
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Old 08-11-2018, 01:28 AM
SquarePizza SquarePizza is offline
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642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions?  
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Awesome, thank you very much
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Old 08-11-2018, 01:33 AM
SquarePizza SquarePizza is offline
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642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions?  
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Dawson has a .145 tall and .100 wide, and I know their sights run narrow, so I might give this sight a try.
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Old 08-11-2018, 01:37 AM
wrangler5 wrangler5 is offline
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642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions?  
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Is there a reason not to just get a factory replacement from S&W? Just wondering.
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Old 08-11-2018, 02:14 PM
SquarePizza SquarePizza is offline
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642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions? 642/649 front sight dimensions?  
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I would like to try a fiber optic sight. I considered going with Hi-Viz since they make the FO sight on the 351pd. But I believe that sight sits up a lot higher, because the rear sight channel of the 351 is higher with a rounded bottom to accommodate the roundness of the FO.

Dawson sights have a great reputation and they are a square black post sight, making it a little closer to the stock 649 sight shape, so hopefully it will work better with the low and square rear channel, making slower/aimed shooting a little easier.
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