Can I do this to my SA Mil-Spec?

[Glocks&Ducs]

Do the Wilson Combat drop-in beaver tails fit on the SA Mil-Spec? The guy at the local shop said it would, but I would have to replace the hammer also, as the stock Mil-Spec hammer is too long or something like that. Can I just take a bench grinder or a file to it if it needs to be fitted?

Also, I have heard that installing a better fitting (in this case, a match Wilson Combat)barrel bushing can help the shooting low problem with the Mil-Spec. There is noticeable space between the current barrel and bushing. It's isn't a huge amount, but I have to hold my front sight at the very top of the bullseye to get them dead on. If I aim for the center of the bullseye, they fall about 3 or 4 inches short at about 10yards.

Or should I just file the front down a little? I think that would look kind of funny with the resultant placement of the white dot though. I am not interested in changing sights at this time.

Thanks.

[6285108]

I'd just send it back to SA..the sights being off would be warranty work and they'll throw a nice Ed Brown or Wilson Combat or Smith and Alexander beavertail grip saftey on it and it will look real good with their delta hammer. I bet it will be less $$ than you think

The Wilson drop into Colt, I don't know if they have a model that drops into SA's