ipas with airsoft?

[JPaling]

so im fed up of using airguns for ipas, because it means i have to have seperate gear and all that, so i was wondering right what sort of pistol would you guys use for ipas/recomend,

im looking for something that can mount a red dot sight on , preferablly blowback,
i love the colt 1911 design so maybe you guys can help me figure out whats best
and most of all must have spares and be accurate
what do you guys recomend,