As a general rule, no.
45 = .451 9mm = .355 The .45 handgun throws the bigger and heavier bullet. The 9mm fires a lighter and smaller bullet, but at a higher speed. The size of the guns that fire either of these rounds could be the same size. Both 9mm pistols and .45 pistols come in full sized guns, compact guns, and even sub-compact or micro sized.
M1911 .45 cal
Air Rifles come in several different bores. .177, .20, .22, .25, 9mm, 45 Cal, 357, and 50 Cal. Big bore usually refers to the 9mm, 45 Cal and 50 Cal. These rifles fall into the PCP class of Air Rifles.
$500.00 is a good price.
Not usually, but it depends on the specific firearm and magazine you are asking about.
The main difference between a 9mm and a .45 caliber bullet is the diameter. A 9mm bullet has a diameter of 9 millimeters, while a .45 caliber bullet has a diameter of .45 inches. The .45 caliber bullet is larger and generally heavier than the 9mm bullet, resulting in differences in recoil, speed, and stopping power.
20 dollars and one hell of a night. if you cautch my drift.
I don't know if it's the smallest, but the Kahr P45 is pretty small.
the 1911 was retired and replaced by the 9mm Beretta pistol. Some say the 45 might have a come back because the 9mm can't do the job of a 45 cal. round.............
It depends on several factors, and it is too broad of a question to answer.
.17....22 Cal....32 Cal....38 Cal....9mm....40 s&w....357 m......44 special....44magnum...45 Cal....454 Cal.....500 magnum......50cal