Only today, after looking at the DPMS website, did I find out that there might be a difference.

So, are there only two cartridges to confuse here?: The .223 Remington and the 5.56x45 NATO? I guess these aren't interchangeable?

If I get an M4gery, I don't want to screw up and get the wrong upper. I want whatever is most common.

search :flipoff2:
Covered a bunch of times here on PBB.

There is a slight difference in the chamber. Google both rounds and SAAMI and you should be able to find the 'blueprints'

look for this on the rifle:

Short version:

You can fire 5.56 and .223 out a weapon chambered for the NATO cartridge, as pictured above.

If you order a weapon chambering the civvy .223, you shouldn't try to run any 5.56 through it. ;)

http://www.ammo-oracle.com/body.htm

look for this on the rifle:

Unless some joker swapped the barrel out.

Unless some joker swapped the barrel out.

"Im a joker Im a smoker Im a midnight toker I get my lovin on the run Wooo wooooo"

Unless some joker swapped the barrel out.

and if you got teh rifle used...look on the bbl as well

and how many sling points does one need?

and how many sling points does one need?

As many as is required to be fully tactical.

:flipoff2:

As many as is required to be fully tactikewl.

Fixed it
:flipoff2:

and how many sling points does one need?
Screw sling points. If you don't have optics mounted to other optics, multiple lasers, and at least 4 lights... You're not tactical enough.

Got picatinny?

I really hope there is a rifle under there somewhere...

I bet all the Counter Strike kiddies heads would explode upon viewing such a masterpiece.

:nuke:

Screw sling points. If you don't have optics mounted to other optics, multiple lasers, and at least 4 lights... You're not tactical enough.

Got picatinny?


damn, and i thought i was tacti-cool:D

Screw sling points. If you don't have optics mounted to other optics, multiple lasers, and at least 4 lights... You're not tactical enough.

Got picatinny?

:laughing:

Niiiice... The sad thing is, there are people out there that will see that and then do it :laughing:

So would veiwing rear iron through two optics and finally the front iron sight still be referred to as co-witness or rather tri-witness?

Short version:

You can fire 5.56 and .223 out a weapon chambered for the NATO cartridge, as pictured above.

If you order a weapon chambering the civvy .223, you shouldn't try to run any 5.56 through it. ;)

5.56 is higher pressure as its loaded hotter. It'd be like shooting +P ammo out of a pistol thats not marked for it. It may not cause you troubles.... but theres a chance you may have it blow up in your face. Fun way to see the differance.... get a rifle chambered for 5.56 NATO. Shoot some M855 or XM193 in the dark without a flash suppressor.... then shoot some wolf .223 or American Eagle .223. Not only will it have significantly less recoil, but it wont be as loud and there will be a much smaller fire ball (if any). In the case of AR's.... some dont like certain .223's as they dont have the UMPH to cycle the next round. My rifle was like that when I first built it, but after changing a few components.... it will swallow the crap with ease