Are the grips interchangeable?
Will this fit into Aliengear holsters?
If it's for a 5" 1911, it should fit.
When looking for a holster what is the right size the choose? Do i look at the barrel length or Overall length, i see here it says 4.5" barrel but the holster go from 4.25" to 5"?
If a holster will fit a 4.25" to 5" 1911, then this will fit.
Is there any significant difference (other than cosmetic) between this and the Swiss Arms TRS?
Not that I know of
Is there a functional grip safety?
Is the picture of this gun accurate showing ambidextrous safety?
Thumb Safety is ambidextrous and has functional grip safety
The images are from Sig, and their website shows the same
What type of magazines does this gun use I know the other sigs take different mags from the other 1911s does anyone know thanks
Mag is interchangeable with Colt Commander (KWC 1911) and Swiss Arms SSP and has improved loading port
Not certain yet, but from the sample shown at SHOT, it should take the same mags as other KWC made 1911s. We will see if that is still the case when they are released.