George and Hays,
OK, I dug around in my file cabinent and will provide what info I have.
DISCLAIMER: This info may be at least partially incorrect, dated or both.
IWI/P-T Night Sights/MMC
5050 E. Belknap
Ft. Worth, TX 76117 www.mmcsight.com
At one point I believe IWI and MMC shared the same adress, if this is still true, I do not know.
As of several years ago, they would drill, blue and install tritium vials in your sights at a very reasonable cost.
The downside was I believe in their lensing material, a silicone based rubbery lens, that would yellow over time and greatly reduce the effective brightness.
49385 Shafer Ave.
Wixom, MI 48393-0059
These are the only folks I deal with these days for tritium lamps. Sapphire lens, white-ring option, excellent product.
Trijicon does no drilling or bluing. They will install lamps into your sights which have been prepared to their specs.
Common front and rear dot inserts require a .076" diameter hole X .280" min. depth which must also be vented by means of a thru hole or and intersecting hole of .040" minimum diameter.
Reasonable prices, great service.
20 Church St.
P.O. Box 543
Oxford, MI 48371
These folks will drill and blue and install Trijicon lamps into your existing sights,
provided the sights will accomodate a hole of the dimensions described above.
As of a few years ago, they would even 'build up' the thickness of a Bo-Mar sight blade to fit the lamps.
I found this company to be expensive and somewhat difficult to deal with.
The greatest majority of the tritium sights I use these days, are drilled and blued by me, then sent to Trijicon.
This allows me to exactly zero point of aim before drilling. Also allows me to open or deepen rear sight notches, break edges, fabricate odd-ball dovetailed sights, etc. then have the sights blued prior to the lamp installation.
Hope this info is of some use, I'll try to answer any additional questions.
Pick any two.