from 10-8’s website (see the bold comment): http://www.10-8forums.com/ubbthreads/ubbthreads.php?ubb=showflat&Number=10096#Post10096
For your convenience, here are some part numbers for the ubiquitous Safariland 6004 for various 1911s with light rails.
6004-538-xxx 1911 w/ Dawson Rail or SureFire MR07 and SureFire Military Light
6004-530-xxx 1911 w/ SureFire MR07 Mount and X200
6004-5340-xxx Kimber Warrior/TLE, Springfield Operator, Wilson CQB and SureFire X200
6004-5621-xxx Kimber Warrior/TLE, Springfield Operator, Wilson CQB w/ ITI M3 or M6. Also works Dawson Rail w/ X200.
6004-56-xxx Kimber Warrior/TLE, Springfield Operator, Wilson CQB without any lights
6004-533-xxx 1911 with SureFire Classic 310R or SureFire MR07 and X200
6004-536-xxx 1911 with SureFire Classic 610R
6004-5322-xxx Caspian Bolt-on Rail with ITI M6x
Note the last three digits designate color and handedness. The first two digits of this series pertain to color:
12 Black
51 Woodland
52 Day Desert
54 OD/Ranger Green
55 Coyote/FDE Brown
The last digit of the series pertain to handedness.
1 Right Hand
2 Left Hand
Thus, a 6004 for a Dawson Railed 1911 with Military Light, Coyote/FDE, in right hand configuration would be 6004-538-551.
Keep in mind not all 6004 holsters are available directly from Safariland in the 6280 configuration. The 6280 is available in the following configurations:
6280-5340-xxx Kimber Warrior/TLE, Springfield Operator, Wilson CQB and SureFire X200
6280-5621-xxx Same guns above w/ ITI M3 or M6. Also works with the MR07 Mount with X200 or Dawson Rail with X200.
6280-56-xxx Same guns as above without any lights.
Even if the holster is only available in 6004 configuration, it can be adapted to a belt holster via the Universal Belt Loop. The UBL’s are available in the following configuration:
6070UBL Mid Ride Duty
6075UBL Duty 1.5" Drop
6280UBL Mid Ride Duty Classic Style (Safarilaminate with hex screws to secure belt), 2 1/4" Sam Browne Belt
6285UBL Same as above with 1.5" drop
Accessories:
6001 SLS Sentry
For duty, I’ve been using the 6001 SLS Sentry switch that converts the 6004 to a Level III retention holster. It consists of a switch that must be deactivated in order to rotate the hood of the SLS system down and forward. The way I use it is I leave it unlatched (defeated) 99% of the time, but quickly latch it if I am going to do a bar check or if I’m about to go hands on.
6000 Hood Guard
The hood guard helps prevent the SLS system from being defeated from the front of the holster. Not sure if I like this, but YMMV.