The M1911 Starter Kit is compatible with Stealth Arms' line of aluminum frames in either Government or Commander sizes with clearance for tactical railed frames in all calibers. The Stealth Arms 9MM family of frames differ in barrel seating and has its own cutting code, more detail here. 1911 9mm article. While the Ghost Gunner 3 is capable of cutting heat-treated steel the existing M1911 cutting code is tailored for 7075 billet aluminum M1911 frames only.
1911 build kits vary in compatibility and quality. Examples of compatible 1911 build kits are linked below:
Stealth Arms has a top-shelf 1911 kit that requires limited filing and fitting.
Midway USA has an affordable 1911 kit that requires a moderate amount of filing and fitting.
Sarco Inc. offers an economy 1911 kit that requires a great deal of filing and fitting.
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Note: Ghost Gunner 2 machines produced after March 2017 include a V2 spindle required to mill pistol frames. If you have an older GG2 produced in 2016, you’ll need to send it in for a spindle upgrade for $317. Original Ghost Gunner 1 machines can be upgraded to mill pistols for $500.
Contact technical support for more information on upgrades or email email@example.com to schedule an upgrade.