that it was shipped with. I drove out the (cheapo plastic) rear sight, bought a cheap plastic caliper, and measured the overall height (.23in top to bottom) and notch (.125in from bottom of notch to bottom of sight). My guess is that the others follow the same pattern.
BTW, I added the SIG adjustable rear sight to my standard model and discovered that I'll need to significantly increase the height of the front sight to get it to zero. Even at the bottom adjustment it still shoots so high its off the paper on a standard 25 yard pistol target even with a six-o'clock hold. I guess that's why you see the milled rear surface on the factory model that has the adjustable sight. I'm considering my options...
I spoke to Larry (the SIG authorized parts supplier) and Brownells. Neither offer a LOWER rear sight than the #6 ( no matter what the Sight Adjustment Tool files shows). Also, according to Brownells technician, the rear dovetail is unique to SIG and there are no generic alternatives.
I already know that the target rear sight is way too high, so that's a 'no go'.
Larry suggested silver soldering a piece of metal to the front sight and filing it to achieve desired point of impact. That's probably pretty inexpensive, and I might go ahead and do that. While I'm at it, I'll ask the gunsmith to reshape it into a ramp, and make it high enough to use the Target rear sight.
On the other hand, Brownell's sells colored lucite rods to glue in after milling a trough to modify a front sight. That's something to consider, too.
If anyone has had success with any other solutions, please speak up
Thanks,
Bruce
Note: Test fired it with the target sight installed.
After doing the math, it looks like I need to add .10 inch to the front sight to zero it vertically for center-hold point-of-impact. I'm going to go with a ramped front sight with a flat top. Acts like a post and won't tear up a holster.
Amount of Error X Sight Radius = Sight Correction Needed
Divided by: Distance to Target
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