fullpacforkids

<o:smarttagtype namespaceuri='urn:schemas-microsoft-com<img src=' images=' smilies=' redface.gif=' border='0' alt=' smilieid='3'></o:smarttagtype>You’re going to need a gunsmith or to be handy because you got the wrong sight. The Colts have two different sight tenon diameters, military (small) and Goldcup (large) and the Springfield uses one that is in between. If your Colt fit in, then it is the small one. I put one of those on a Springfield one time, was even able to use my staking tool to get it to stay put, but it was weak and eventually broke off. No SA size tenons were available for that sight style, so I had to get one with the oversize Colt Goldcup tenon, then file it down with a flat file that has a dead edge. Bunch of work, but it solved the problem.
Breakage and flying off is why a lot of custom smiths used to silver solder front sights onto the slide. The old cadmium bearing sliver solders flowed a treat. The modern ones are a little harder to get a good thin bond line with, and the heat is high enough that you need to refinish the slide afterward.