The AR-15 uses a direct impingement operating system, whereas the Mini 14 uses a gas piston system based on the M14 rifle.
The M4 is capable of automatic fire, the AR 15 is not
There are a large number of differences based on the models of both guns, however the most notable is that the AR15 is a semi-automatic and the M16 is capable of semi-automatic or full automatic.
AR 15 - semi-automatic only M16 - depending on variant capable of full auto or burst fire. Will also fire semi-auto.
The extension tube of the commercial buttstock is actually thicker than the milspec extension tube, and they tend to be slightly angled at the end.
thank you
Depends on what variant, accessories and overall condition. Range from 200-600 USD.
Try AR15.com Try AR15.com
If it is one of the recent Colt .22LR AR15 rifles, then the answer is no - they are completely different internally.
1959
Yes
AR-15 = Semi-Auto civilian rifle M4 = Select Fire Military rifle
The US Army presently uses the M4 carbine, a shorter and much modified version of the Armalite AR15.