What is the difference between m4 carbine and m4a1

Not to stray away from the original intent of the thread, but I keep hearing about them. I'd really like some info if anybody has some. Originally Posted by gotm4. Page 1 of 3 1 2 3 Last Jump to page:.

Bookmarks Bookmarks del. All times are GMT The time now is Image resizer by SevenSkins. The weight of the carbine with round magazine is 3. The weapon can be comfortably carried by soldiers, due to its compact dimensions. It is the only 5. The only difference between the M4A1 and M4 is that its trigger unit of M4A1 is modified to fire full-auto instead of the three shots bursts in M4. The M4 carbine differs from the M16A2 rifle only by having a shorter barrel and a telescoped, 4-position buttstock.

It is now the standard issue firearm for most units in the U. It makes only two changes to be legal for consumer markets, to the barrel and fire-control group. The M4A1 has a The M4A1 is used by almost all U. It has a maximum effective range of to meters — yd.

There is the binary firing system that the Feds have decided is legal. Well , I only have the upper receiver and barrel and not the lower receiver. That is why , I cannot tell if it's it has a 3 round or full auto burst. As for the the rifle being issued , probably , the lower receiver from which my upper receiver and barrel came from , might have been.

By the way , in the upper receiver , there is a laser mark "c" and "AF". Are you referring to the models with a 16" barrel? Originally Posted by JSantoro. Originally Posted by Secretariat.

The barrel profile under the handguards of the "M4A1" will be the same thickness as it is after the FSB while the "M4" will have a barrel that is a thinner profile under the handguards. When I said issued rifle, I meant if you were currently serving in the military or law enforcement and they issued it to you.

Those don't mix into the civilian world at any point. You can buy Colt rifles available to the public which come pretty damn close, but it sounds like you're pretty new to firearms or at least ARs and are under a common misconception.