The Colt M1911 was designed 1911.
The Colt M1911 pistol was invented by John Browning(1855-1926).
M1911, M1911A1, Colt SAA
400-1000
Colt M1911
You must call Colt to find out.
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The M1911 is the military designation for John M. Browning's .45 caliber automatic pistol. He was employed by Colt Firearms, so the patent gives credit to Colt for this firearm.
The Colt M1911 and the colt M1911A has only 1 caliber .45 or 45/100 of an inch. This round is also known as the colt .45 A.C.P. (all Colt pistols) It is a short round which differs from the .45 long round.
Colt has never produced a model M1911 that is powered by CO2.
John M. Browning.
1911, and remodled in 1927