If you want to do a pistol project or DIY, see Brownells.com E-gunparts.com Midwayusa.com Natchezss.com NRA.org Deltapress.com Paladin-press.com .
There are many top 1911 pistolsmiths; Cylinder & Slide, Hilton Yam: 10-8 Performance, Wilson Combat, Dave Lauck, Gemini Customs, Les Baer, Larry Vickers, Robar Guns.
See the American Pistolsmiths Guild,
www.americanpistol.com . They list many top pistolsmiths by state or what services they offer.
Keep in mind that top shops or gunsmiths can take weeks or months.
Parts may be on back order too.
The 2013 gun blitz caused a lot of backlog.