Another idea
Several companies make front shotgun sights of various configurations, all of which are intended to be basically glued on top of an existing bead.
One such firm is XS Sight Systems, makers of the (in)famous 'Big Dot', whose products are available at Brownells.
Looking at the pic, it appears the 'Plain Barrel' version on the right might be adaptable to a 1911 slide with a tiny front sight (particularly if made 'tinier' with some careful file work).
![[image]](http://www.brownells.com/userdocs/products/p_006000158_1.jpg)
Of course, you'd need to either modify your rear sight, or get another one more compatible with the 'Big Dot'.
The good news is, Brownells (and/or XS Sight Systems) have a few of those as well − and some of them are actually made for the 1911. 
HTH 
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Complete thread:
- VALUE?? of a Colt gubmit 1911 slide -
RidinLou,
2013-07-29, 21:29
![[*]](themes/default/images/complete_thread.png "Open whole thread")
- You want to buy a new slide because the sights are too low? - Rob Leahy, 2013-07-30, 01:08
- Your slide might be 'valuable' - FOG, 2013-07-30, 03:50
- Another idea - FOG, 2013-07-30, 04:14
- VALUE?? of a Colt gubmit 1911 slide -
Catoosa,
2013-07-30, 10:34
- I think it's already a parts gun conglomerated together -
stonewalrus,
2013-07-30, 12:47
- Shagbark Hill Shoot -
Catoosa,
2013-07-30, 21:08
- Shagbark Hill Shoot - RidinLou, 2013-08-04, 08:50
- I think it's already a parts gun conglomerated together - RidinLou, 2013-08-01, 19:08
- Shagbark Hill Shoot -
Catoosa,
2013-07-30, 21:08
- I think it's already a parts gun conglomerated together -
stonewalrus,
2013-07-30, 12:47