Here's what I show for Colorado: I have no recommendations one way or another.
Custom Gunsmiths
4303 Friar Ln.
Colorado Springs, CO 80907
(719) 599-3366
Hanson's Gun Center
233 Everett Dr.
Colorado Springs,CO 80911
Gary Kimball
1526 N. Circle Dr.
Colorado Springs, CO 80909
(719) 634-1274
Corky's Gun Clinic
4401 Hot Springs Dr.
Greenley, CO 80634
(303) 330-0516
Dick Campbell
20000 Silver Ranch Rd.
Conifer, CO 80433
Fisher Custom Firearms
2199 S. Kittredge Way
Aurora, CO 80013
(303) 755-3710
Charles Hardison
P.O. Box 356 200 W. Baseline Rd.
Lafayette, CO 80026
Highline Machine Co.
654 Lela Place
Grand Junction, CO 81504
(303) 434-4971
300 Gunsmith Service, Inc.
12500 E. Belleview Ave.
Englewood CO 801 11
(303) 690-3300