To manufacture a Short barreled Rifle, you will need to apply to the Federal Bureau of Alcohol, Tobacco, Firearms and Explosives. You will need the completed application, a set of fingerprints, payment in the amount of $200 and be at least 21 years of age (and legally able to possess a firearm.)
You can get them as short as 18 inches, provided you either mount them to a pistol lower, or else get an NFA permit to assemble a short-barreled rifle. For a Title 1 rifle not requiring an NFA permit, it's 16 inches permanent length.
It depends.. if you have a carbine length barrel and will be using it on a rifle with a carbine length barrel, then yes. If you took it from a rifle with a rifle length barrel, and are putting it on a rifle with a carbine length barrel, then it won't function properly.
It is the Carbine (short rifle) version of the AR15. AR stands for Armalite Rifle. It is a semi auto rifle.
18 for a Title 1 rifle (16" barrel minimum, semi auto only), 21 for a pistol or NFA restricted variant (full auto, barrel shorter than 16" on a rifle lower).
The NORINCO CQ5.56.
Try AR15.com Try AR15.com
Yes
The M4 is capable of automatic fire, the AR 15 is not
You will need a free-float hand guard kit. These can be purchased online. Check out this video for an example of how to install such a kit: http://www.wonderhowto.com/how-to/video/how-to-install-a-free-float-handguard-on-an-ar-15-rifle-267096/view/
Not recommended.
What is the manufacture date of a Colt AR15 rifle serial number 192754 model SP1
AR-15 = Semi-Auto civilian rifle M4 = Select Fire Military rifle