The AR-15 and the M-16 rifle have the same caliber and everything else is the same except for the receiver and the internal parts of the receiver; connector, disconnector, bolt, etc. The AR-15 is the civilian version and the M-16 is the military version. The AR is semi-auto and the M-16 has the option of being fired semi-auto, 3 shot burst and fully automatic. The bullets used are .223. The statements above are from a certified weapons trainer.
- The AR-15 is a very accurate rifle even at long range.
- A lot of different companies make them.
- There are a wide variety of parts, accessories and options.
Cons of the AR-15
- It is a relatively small bullet and does not have the stopping power that some larger rifles have.
- If used in a dirty or dusty environment, they need to be cleaned often or it will affect the performance. If not cleaned regularly, you may experience jamming and inaccuracy.