If it is one of the recent Colt .22LR AR15 rifles, then the answer is no - they are completely different internally.
Most are chambered for the 5.56x45 cartridge, and can also fire the .223 Remington. However, AR-15 type rifles are available in a number of calibres. 9x19mm, .40 Smith & Wesson, .45 Automatic Colt Pistol, .22 Long Rifle, 5.45x39, 7.62x39, .223 Wylde, .204 Ruger, 6.5 Grendel, and 6.8 Remington SPC are some of the available chamberings.
223
No, a 22 is not larger than a 223. In numerical terms, 223 is greater than 22. In the context of ammunition, .22 refers to a smaller caliber, while .223 indicates a larger caliber round. Thus, both in numerical value and in caliber size, 223 is larger than 22.
Conversion kits are available from Ceiner and auction sites for Colt or military surplus.
Not recommended.
No. Only made for the Ruger 10-22.
It depends on what you mean. Strictly speaking, a .223 cartridge has a .22 caliber bullet, but when people say .22, they are usually referring to .22 Short, Long Rifle, or Magnum cartridge, which is different than .223.
201
The Colt M4 Carbine .22 is a replica of the real M4 but in .22 caliber.
22 cubed = 223
The .22 Long Rifle is a rimfire, whereas the .223 Remington is a centerfire cartridge. The .223 uses a longer 'spitzer' projectile vs. the rounded projectile of the .22 LR. The .223 tends to be a heavier projectile, and has a much higher velocity than the .22 LR.
No But the Caliber is the same but theres more powder in the 223